diff options
| -rw-r--r-- | target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch | 2610 |
1 files changed, 1336 insertions, 1274 deletions
diff --git a/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch b/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch index 8be7af7..5ec0b99 100644 --- a/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch +++ b/target/linux/ixp4xx/patches-2.6.24/200-npe_driver.patch @@ -1,1124 +1,3 @@ -diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c -index 4de432e..c4c810b 100644 ---- a/arch/arm/kernel/setup.c -+++ b/arch/arm/kernel/setup.c -@@ -61,6 +61,7 @@ extern int root_mountflags; - extern void _stext, _text, _etext, __data_start, _edata, _end; - - unsigned int processor_id; -+EXPORT_SYMBOL(processor_id); - unsigned int __machine_arch_type; - EXPORT_SYMBOL(__machine_arch_type); - -diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig -index 61b2dfc..e774447 100644 ---- a/arch/arm/mach-ixp4xx/Kconfig -+++ b/arch/arm/mach-ixp4xx/Kconfig -@@ -189,6 +189,20 @@ config IXP4XX_INDIRECT_PCI - need to use the indirect method instead. If you don't know - what you need, leave this option unselected. - -+config IXP4XX_QMGR -+ tristate "IXP4xx Queue Manager support" -+ help -+ This driver supports IXP4xx built-in hardware queue manager -+ and is automatically selected by Ethernet and HSS drivers. -+ -+config IXP4XX_NPE -+ tristate "IXP4xx Network Processor Engine support" -+ select HOTPLUG -+ select FW_LOADER -+ help -+ This driver supports IXP4xx built-in network coprocessors -+ and is automatically selected by Ethernet and HSS drivers. -+ - endmenu - - endif -diff --git a/arch/arm/mach-ixp4xx/Makefile b/arch/arm/mach-ixp4xx/Makefile -index 77e00ad..4bb97e1 100644 ---- a/arch/arm/mach-ixp4xx/Makefile -+++ b/arch/arm/mach-ixp4xx/Makefile -@@ -30,3 +30,5 @@ obj-$(CONFIG_MACH_GATEWAY7001) += gateway7001-setup.o - obj-$(CONFIG_MACH_WG302V2) += wg302v2-setup.o - - obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o -+obj-$(CONFIG_IXP4XX_QMGR) += ixp4xx_qmgr.o -+obj-$(CONFIG_IXP4XX_NPE) += ixp4xx_npe.o -diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c -index d5008d8..10b41c6 100644 ---- a/arch/arm/mach-ixp4xx/ixdp425-setup.c -+++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c -@@ -177,6 +177,31 @@ static struct platform_device ixdp425_uart = { - .resource = ixdp425_uart_resources - }; - -+/* Built-in 10/100 Ethernet MAC interfaces */ -+static struct eth_plat_info ixdp425_plat_eth[] = { -+ { -+ .phy = 0, -+ .rxq = 3, -+ .txreadyq = 20, -+ }, { -+ .phy = 1, -+ .rxq = 4, -+ .txreadyq = 21, -+ } -+}; -+ -+static struct platform_device ixdp425_eth[] = { -+ { -+ .name = "ixp4xx_eth", -+ .id = IXP4XX_ETH_NPEB, -+ .dev.platform_data = ixdp425_plat_eth, -+ }, { -+ .name = "ixp4xx_eth", -+ .id = IXP4XX_ETH_NPEC, -+ .dev.platform_data = ixdp425_plat_eth + 1, -+ } -+}; -+ - static struct platform_device *ixdp425_devices[] __initdata = { - &ixdp425_i2c_controller, - &ixdp425_flash, -@@ -184,7 +209,9 @@ static struct platform_device *ixdp425_devices[] __initdata = { - defined(CONFIG_MTD_NAND_PLATFORM_MODULE) - &ixdp425_flash_nand, - #endif -- &ixdp425_uart -+ &ixdp425_uart, -+ &ixdp425_eth[0], -+ &ixdp425_eth[1], - }; - - static void __init ixdp425_init(void) -diff --git a/arch/arm/mach-ixp4xx/ixp4xx_npe.c b/arch/arm/mach-ixp4xx/ixp4xx_npe.c -new file mode 100644 -index 0000000..83c137e ---- /dev/null -+++ b/arch/arm/mach-ixp4xx/ixp4xx_npe.c -@@ -0,0 +1,741 @@ -+/* -+ * Intel IXP4xx Network Processor Engine driver for Linux -+ * -+ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl> -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ * -+ * The code is based on publicly available information: -+ * - Intel IXP4xx Developer's Manual and other e-papers -+ * - Intel IXP400 Access Library Software (BSD license) -+ * - previous works by Christian Hohnstaedt <chohnstaedt@innominate.com> -+ * Thanks, Christian. -+ */ -+ -+#include <linux/delay.h> -+#include <linux/dma-mapping.h> -+#include <linux/firmware.h> -+#include <linux/io.h> -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <linux/slab.h> -+#include <asm/arch/npe.h> -+ -+#define DEBUG_MSG 0 -+#define DEBUG_FW 0 -+ -+#define NPE_COUNT 3 -+#define MAX_RETRIES 1000 /* microseconds */ -+#define NPE_42X_DATA_SIZE 0x800 /* in dwords */ -+#define NPE_46X_DATA_SIZE 0x1000 -+#define NPE_A_42X_INSTR_SIZE 0x1000 -+#define NPE_B_AND_C_42X_INSTR_SIZE 0x800 -+#define NPE_46X_INSTR_SIZE 0x1000 -+#define REGS_SIZE 0x1000 -+ -+#define NPE_PHYS_REG 32 -+ -+#define FW_MAGIC 0xFEEDF00D -+#define FW_BLOCK_TYPE_INSTR 0x0 -+#define FW_BLOCK_TYPE_DATA 0x1 -+#define FW_BLOCK_TYPE_EOF 0xF -+ -+/* NPE exec status (read) and command (write) */ -+#define CMD_NPE_STEP 0x01 -+#define CMD_NPE_START 0x02 -+#define CMD_NPE_STOP 0x03 -+#define CMD_NPE_CLR_PIPE 0x04 -+#define CMD_CLR_PROFILE_CNT 0x0C -+#define CMD_RD_INS_MEM 0x10 /* instruction memory */ -+#define CMD_WR_INS_MEM 0x11 -+#define CMD_RD_DATA_MEM 0x12 /* data memory */ -+#define CMD_WR_DATA_MEM 0x13 -+#define CMD_RD_ECS_REG 0x14 /* exec access register */ -+#define CMD_WR_ECS_REG 0x15 -+ -+#define STAT_RUN 0x80000000 -+#define STAT_STOP 0x40000000 -+#define STAT_CLEAR 0x20000000 -+#define STAT_ECS_K 0x00800000 /* pipeline clean */ -+ -+#define NPE_STEVT 0x1B -+#define NPE_STARTPC 0x1C -+#define NPE_REGMAP 0x1E -+#define NPE_CINDEX 0x1F -+ -+#define INSTR_WR_REG_SHORT 0x0000C000 -+#define INSTR_WR_REG_BYTE 0x00004000 -+#define INSTR_RD_FIFO 0x0F888220 -+#define INSTR_RESET_MBOX 0x0FAC8210 -+ -+#define ECS_BG_CTXT_REG_0 0x00 /* Background Executing Context */ -+#define ECS_BG_CTXT_REG_1 0x01 /* Stack level */ -+#define ECS_BG_CTXT_REG_2 0x02 -+#define ECS_PRI_1_CTXT_REG_0 0x04 /* Priority 1 Executing Context */ -+#define ECS_PRI_1_CTXT_REG_1 0x05 /* Stack level */ -+#define ECS_PRI_1_CTXT_REG_2 0x06 -+#define ECS_PRI_2_CTXT_REG_0 0x08 /* Priority 2 Executing Context */ -+#define ECS_PRI_2_CTXT_REG_1 0x09 /* Stack level */ -+#define ECS_PRI_2_CTXT_REG_2 0x0A -+#define ECS_DBG_CTXT_REG_0 0x0C /* Debug Executing Context */ -+#define ECS_DBG_CTXT_REG_1 0x0D /* Stack level */ -+#define ECS_DBG_CTXT_REG_2 0x0E -+#define ECS_INSTRUCT_REG 0x11 /* NPE Instruction Register */ -+ -+#define ECS_REG_0_ACTIVE 0x80000000 /* all levels */ -+#define ECS_REG_0_NEXTPC_MASK 0x1FFF0000 /* BG/PRI1/PRI2 levels */ -+#define ECS_REG_0_LDUR_BITS 8 -+#define ECS_REG_0_LDUR_MASK 0x00000700 /* all levels */ -+#define ECS_REG_1_CCTXT_BITS 16 -+#define ECS_REG_1_CCTXT_MASK 0x000F0000 /* all levels */ -+#define ECS_REG_1_SELCTXT_BITS 0 -+#define ECS_REG_1_SELCTXT_MASK 0x0000000F /* all levels */ -+#define ECS_DBG_REG_2_IF 0x00100000 /* debug level */ -+#define ECS_DBG_REG_2_IE 0x00080000 /* debug level */ -+ -+/* NPE watchpoint_fifo register bit */ -+#define WFIFO_VALID 0x80000000 -+ -+/* NPE messaging_status register bit definitions */ -+#define MSGSTAT_OFNE 0x00010000 /* OutFifoNotEmpty */ -+#define MSGSTAT_IFNF 0x00020000 /* InFifoNotFull */ -+#define MSGSTAT_OFNF 0x00040000 /* OutFifoNotFull */ -+#define MSGSTAT_IFNE 0x00080000 /* InFifoNotEmpty */ -+#define MSGSTAT_MBINT 0x00100000 /* Mailbox interrupt */ -+#define MSGSTAT_IFINT 0x00200000 /* InFifo interrupt */ -+#define MSGSTAT_OFINT 0x00400000 /* OutFifo interrupt */ -+#define MSGSTAT_WFINT 0x00800000 /* WatchFifo interrupt */ -+ -+/* NPE messaging_control register bit definitions */ -+#define MSGCTL_OUT_FIFO 0x00010000 /* enable output FIFO */ -+#define MSGCTL_IN_FIFO 0x00020000 /* enable input FIFO */ -+#define MSGCTL_OUT_FIFO_WRITE 0x01000000 /* enable FIFO + WRITE */ -+#define MSGCTL_IN_FIFO_WRITE 0x02000000 -+ -+/* NPE mailbox_status value for reset */ -+#define RESET_MBOX_STAT 0x0000F0F0 -+ -+const char *npe_names[] = { "NPE-A", "NPE-B", "NPE-C" }; -+ -+#define print_npe(pri, npe, fmt, ...) \ -+ printk(pri "%s: " fmt, npe_name(npe), ## __VA_ARGS__) -+ -+#if DEBUG_MSG -+#define debug_msg(npe, fmt, ...) \ -+ print_npe(KERN_DEBUG, npe, fmt, ## __VA_ARGS__) -+#else -+#define debug_msg(npe, fmt, ...) -+#endif -+ -+static struct { -+ u32 reg, val; -+} ecs_reset[] = { -+ { ECS_BG_CTXT_REG_0, 0xA0000000 }, -+ { ECS_BG_CTXT_REG_1, 0x01000000 }, -+ { ECS_BG_CTXT_REG_2, 0x00008000 }, -+ { ECS_PRI_1_CTXT_REG_0, 0x20000080 }, -+ { ECS_PRI_1_CTXT_REG_1, 0x01000000 }, -+ { ECS_PRI_1_CTXT_REG_2, 0x00008000 }, -+ { ECS_PRI_2_CTXT_REG_0, 0x20000080 }, -+ { ECS_PRI_2_CTXT_REG_1, 0x01000000 }, -+ { ECS_PRI_2_CTXT_REG_2, 0x00008000 }, -+ { ECS_DBG_CTXT_REG_0, 0x20000000 }, -+ { ECS_DBG_CTXT_REG_1, 0x00000000 }, -+ { ECS_DBG_CTXT_REG_2, 0x001E0000 }, -+ { ECS_INSTRUCT_REG, 0x1003C00F }, -+}; -+ -+static struct npe npe_tab[NPE_COUNT] = { -+ { -+ .id = 0, -+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEA_BASE_VIRT, -+ .regs_phys = IXP4XX_NPEA_BASE_PHYS, -+ }, { -+ .id = 1, -+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEB_BASE_VIRT, -+ .regs_phys = IXP4XX_NPEB_BASE_PHYS, -+ }, { -+ .id = 2, -+ .regs = (struct npe_regs __iomem *)IXP4XX_NPEC_BASE_VIRT, -+ .regs_phys = IXP4XX_NPEC_BASE_PHYS, -+ } -+}; -+ -+int npe_running(struct npe *npe) -+{ -+ return (__raw_readl(&npe->regs->exec_status_cmd) & STAT_RUN) != 0; -+} -+ -+static void npe_cmd_write(struct npe *npe, u32 addr, int cmd, u32 data) -+{ -+ __raw_writel(data, &npe->regs->exec_data); -+ __raw_writel(addr, &npe->regs->exec_addr); -+ __raw_writel(cmd, &npe->regs->exec_status_cmd); -+} -+ -+static u32 npe_cmd_read(struct npe *npe, u32 addr, int cmd) -+{ -+ __raw_writel(addr, &npe->regs->exec_addr); -+ __raw_writel(cmd, &npe->regs->exec_status_cmd); -+ /* Iintroduce extra read cycles after issuing read command to NPE -+ so that we read the register after the NPE has updated it. -+ This is to overcome race condition between XScale and NPE */ -+ __raw_readl(&npe->regs->exec_data); -+ __raw_readl(&npe->regs->exec_data); -+ return __raw_readl(&npe->regs->exec_data); -+} -+ -+static void npe_clear_active(struct npe *npe, u32 reg) -+{ -+ u32 val = npe_cmd_read(npe, reg, CMD_RD_ECS_REG); -+ npe_cmd_write(npe, reg, CMD_WR_ECS_REG, val & ~ECS_REG_0_ACTIVE); -+} -+ -+static void npe_start(struct npe *npe) -+{ -+ /* ensure only Background Context Stack Level is active */ -+ npe_clear_active(npe, ECS_PRI_1_CTXT_REG_0); -+ npe_clear_active(npe, ECS_PRI_2_CTXT_REG_0); -+ npe_clear_active(npe, ECS_DBG_CTXT_REG_0); -+ -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); -+ __raw_writel(CMD_NPE_START, &npe->regs->exec_status_cmd); -+} -+ -+static void npe_stop(struct npe *npe) -+{ -+ __raw_writel(CMD_NPE_STOP, &npe->regs->exec_status_cmd); -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); /*FIXME?*/ -+} -+ -+static int __must_check npe_debug_instr(struct npe *npe, u32 instr, u32 ctx, -+ u32 ldur) -+{ -+ u32 wc; -+ int i; -+ -+ /* set the Active bit, and the LDUR, in the debug level */ -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, -+ ECS_REG_0_ACTIVE | (ldur << ECS_REG_0_LDUR_BITS)); -+ -+ /* set CCTXT at ECS DEBUG L3 to specify in which context to execute -+ the instruction, and set SELCTXT at ECS DEBUG Level to specify -+ which context store to access. -+ Debug ECS Level Reg 1 has form 0x000n000n, where n = context number -+ */ -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_1, CMD_WR_ECS_REG, -+ (ctx << ECS_REG_1_CCTXT_BITS) | -+ (ctx << ECS_REG_1_SELCTXT_BITS)); -+ -+ /* clear the pipeline */ -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); -+ -+ /* load NPE instruction into the instruction register */ -+ npe_cmd_write(npe, ECS_INSTRUCT_REG, CMD_WR_ECS_REG, instr); -+ -+ /* we need this value later to wait for completion of NPE execution -+ step */ -+ wc = __raw_readl(&npe->regs->watch_count); -+ -+ /* issue a Step One command via the Execution Control register */ -+ __raw_writel(CMD_NPE_STEP, &npe->regs->exec_status_cmd); -+ -+ /* Watch Count register increments when NPE completes an instruction */ -+ for (i = 0; i < MAX_RETRIES; i++) { -+ if (wc != __raw_readl(&npe->regs->watch_count)) -+ return 0; -+ udelay(1); -+ } -+ -+ print_npe(KERN_ERR, npe, "reset: npe_debug_instr(): timeout\n"); -+ return -ETIMEDOUT; -+} -+ -+static int __must_check npe_logical_reg_write8(struct npe *npe, u32 addr, -+ u8 val, u32 ctx) -+{ -+ /* here we build the NPE assembler instruction: mov8 d0, #0 */ -+ u32 instr = INSTR_WR_REG_BYTE | /* OpCode */ -+ addr << 9 | /* base Operand */ -+ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */ -+ (val & ~0x1F) << (18 - 5);/* higher 3 bits to CoProc instr. */ -+ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */ -+} -+ -+static int __must_check npe_logical_reg_write16(struct npe *npe, u32 addr, -+ u16 val, u32 ctx) -+{ -+ /* here we build the NPE assembler instruction: mov16 d0, #0 */ -+ u32 instr = INSTR_WR_REG_SHORT | /* OpCode */ -+ addr << 9 | /* base Operand */ -+ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */ -+ (val & ~0x1F) << (18 - 5);/* higher 11 bits to CoProc instr. */ -+ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */ -+} -+ -+static int __must_check npe_logical_reg_write32(struct npe *npe, u32 addr, -+ u32 val, u32 ctx) -+{ -+ /* write in 16 bit steps first the high and then the low value */ -+ if (npe_logical_reg_write16(npe, addr, val >> 16, ctx)) -+ return -ETIMEDOUT; -+ return npe_logical_reg_write16(npe, addr + 2, val & 0xFFFF, ctx); -+} -+ -+static int npe_reset(struct npe *npe) -+{ -+ u32 val, ctl, exec_count, ctx_reg2; -+ int i; -+ -+ ctl = (__raw_readl(&npe->regs->messaging_control) | 0x3F000000) & -+ 0x3F3FFFFF; -+ -+ /* disable parity interrupt */ -+ __raw_writel(ctl & 0x3F00FFFF, &npe->regs->messaging_control); -+ -+ /* pre exec - debug instruction */ -+ /* turn off the halt bit by clearing Execution Count register. */ -+ exec_count = __raw_readl(&npe->regs->exec_count); -+ __raw_writel(0, &npe->regs->exec_count); -+ /* ensure that IF and IE are on (temporarily), so that we don't end up -+ stepping forever */ -+ ctx_reg2 = npe_cmd_read(npe, ECS_DBG_CTXT_REG_2, CMD_RD_ECS_REG); -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2 | -+ ECS_DBG_REG_2_IF | ECS_DBG_REG_2_IE); -+ -+ /* clear the FIFOs */ -+ while (__raw_readl(&npe->regs->watchpoint_fifo) & WFIFO_VALID) -+ ; -+ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) -+ /* read from the outFIFO until empty */ -+ print_npe(KERN_DEBUG, npe, "npe_reset: read FIFO = 0x%X\n", -+ __raw_readl(&npe->regs->in_out_fifo)); -+ -+ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) -+ /* step execution of the NPE intruction to read inFIFO using -+ the Debug Executing Context stack */ -+ if (npe_debug_instr(npe, INSTR_RD_FIFO, 0, 0)) -+ return -ETIMEDOUT; -+ -+ /* reset the mailbox reg from the XScale side */ -+ __raw_writel(RESET_MBOX_STAT, &npe->regs->mailbox_status); -+ /* from NPE side */ -+ if (npe_debug_instr(npe, INSTR_RESET_MBOX, 0, 0)) -+ return -ETIMEDOUT; -+ -+ /* Reset the physical registers in the NPE register file */ -+ for (val = 0; val < NPE_PHYS_REG; val++) { -+ if (npe_logical_reg_write16(npe, NPE_REGMAP, val >> 1, 0)) -+ return -ETIMEDOUT; -+ /* address is either 0 or 4 */ -+ if (npe_logical_reg_write32(npe, (val & 1) * 4, 0, 0)) -+ return -ETIMEDOUT; -+ } -+ -+ /* Reset the context store = each context's Context Store registers */ -+ -+ /* Context 0 has no STARTPC. Instead, this value is used to set NextPC -+ for Background ECS, to set where NPE starts executing code */ -+ val = npe_cmd_read(npe, ECS_BG_CTXT_REG_0, CMD_RD_ECS_REG); -+ val &= ~ECS_REG_0_NEXTPC_MASK; -+ val |= (0 /* NextPC */ << 16) & ECS_REG_0_NEXTPC_MASK; -+ npe_cmd_write(npe, ECS_BG_CTXT_REG_0, CMD_WR_ECS_REG, val); -+ -+ for (i = 0; i < 16; i++) { -+ if (i) { /* Context 0 has no STEVT nor STARTPC */ -+ /* STEVT = off, 0x80 */ -+ if (npe_logical_reg_write8(npe, NPE_STEVT, 0x80, i)) -+ return -ETIMEDOUT; -+ if (npe_logical_reg_write16(npe, NPE_STARTPC, 0, i)) -+ return -ETIMEDOUT; -+ } -+ /* REGMAP = d0->p0, d8->p2, d16->p4 */ -+ if (npe_logical_reg_write16(npe, NPE_REGMAP, 0x820, i)) -+ return -ETIMEDOUT; -+ if (npe_logical_reg_write8(npe, NPE_CINDEX, 0, i)) -+ return -ETIMEDOUT; -+ } -+ -+ /* post exec */ -+ /* clear active bit in debug level */ -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, 0); -+ /* clear the pipeline */ -+ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); -+ /* restore previous values */ -+ __raw_writel(exec_count, &npe->regs->exec_count); -+ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2); -+ -+ /* write reset values to Execution Context Stack registers */ -+ for (val = 0; val < ARRAY_SIZE(ecs_reset); val++) -+ npe_cmd_write(npe, ecs_reset[val].reg, CMD_WR_ECS_REG, -+ ecs_reset[val].val); -+ -+ /* clear the profile counter */ -+ __raw_writel(CMD_CLR_PROFILE_CNT, &npe->regs->exec_status_cmd); -+ -+ __raw_writel(0, &npe->regs->exec_count); -+ __raw_writel(0, &npe->regs->action_points[0]); -+ __raw_writel(0, &npe->regs->action_points[1]); -+ __raw_writel(0, &npe->regs->action_points[2]); -+ __raw_writel(0, &npe->regs->action_points[3]); -+ __raw_writel(0, &npe->regs->watch_count); -+ -+ val = ixp4xx_read_feature_bits(); -+ /* reset the NPE */ -+ ixp4xx_write_feature_bits(val & -+ ~(IXP4XX_FEATURE_RESET_NPEA << npe->id)); -+ for (i = 0; i < MAX_RETRIES; i++) { -+ if (!(ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_RESET_NPEA << npe->id))) -+ break; /* reset completed */ -+ udelay(1); -+ } -+ if (i == MAX_RETRIES) -+ return -ETIMEDOUT; -+ -+ /* deassert reset */ -+ ixp4xx_write_feature_bits(val | -+ (IXP4XX_FEATURE_RESET_NPEA << npe->id)); -+ for (i = 0; i < MAX_RETRIES; i++) { -+ if (ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_RESET_NPEA << npe->id)) -+ break; /* NPE is back alive */ -+ udelay(1); -+ } -+ if (i == MAX_RETRIES) -+ return -ETIMEDOUT; -+ -+ npe_stop(npe); -+ -+ /* restore NPE configuration bus Control Register - parity settings */ -+ __raw_writel(ctl, &npe->regs->messaging_control); -+ return 0; -+} -+ -+ -+int npe_send_message(struct npe *npe, const void *msg, const char *what) -+{ -+ const u32 *send = msg; -+ int cycles = 0; -+ -+ debug_msg(npe, "Trying to send message %s [%08X:%08X]\n", -+ what, send[0], send[1]); -+ -+ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) { -+ debug_msg(npe, "NPE input FIFO not empty\n"); -+ return -EIO; -+ } -+ -+ __raw_writel(send[0], &npe->regs->in_out_fifo); -+ -+ if (!(__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNF)) { -+ debug_msg(npe, "NPE input FIFO full\n"); -+ return -EIO; -+ } -+ -+ __raw_writel(send[1], &npe->regs->in_out_fifo); -+ -+ while ((cycles < MAX_RETRIES) && -+ (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE)) { -+ udelay(1); -+ cycles++; -+ } -+ -+ if (cycles == MAX_RETRIES) { -+ debug_msg(npe, "Timeout sending message\n"); -+ return -ETIMEDOUT; -+ } -+ -+ debug_msg(npe, "Sending a message took %i cycles\n", cycles); -+ return 0; -+} -+ -+int npe_recv_message(struct npe *npe, void *msg, const char *what) -+{ -+ u32 *recv = msg; -+ int cycles = 0, cnt = 0; -+ -+ debug_msg(npe, "Trying to receive message %s\n", what); -+ -+ while (cycles < MAX_RETRIES) { -+ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) { -+ recv[cnt++] = __raw_readl(&npe->regs->in_out_fifo); -+ if (cnt == 2) -+ break; -+ } else { -+ udelay(1); -+ cycles++; -+ } -+ } -+ -+ switch(cnt) { -+ case 1: -+ debug_msg(npe, "Received [%08X]\n", recv[0]); -+ break; -+ case 2: -+ debug_msg(npe, "Received [%08X:%08X]\n", recv[0], recv[1]); -+ break; -+ } -+ -+ if (cycles == MAX_RETRIES) { -+ debug_msg(npe, "Timeout waiting for message\n"); -+ return -ETIMEDOUT; -+ } -+ -+ debug_msg(npe, "Receiving a message took %i cycles\n", cycles); -+ return 0; -+} -+ -+int npe_send_recv_message(struct npe *npe, void *msg, const char *what) -+{ -+ int result; -+ u32 *send = msg, recv[2]; -+ -+ if ((result = npe_send_message(npe, msg, what)) != 0) -+ return result; -+ if ((result = npe_recv_message(npe, recv, what)) != 0) -+ return result; -+ -+ if ((recv[0] != send[0]) || (recv[1] != send[1])) { -+ debug_msg(npe, "Message %s: unexpected message received\n", -+ what); -+ return -EIO; -+ } -+ return 0; -+} -+ -+ -+int npe_load_firmware(struct npe *npe, const char *name, struct device *dev) -+{ -+ const struct firmware *fw_entry; -+ -+ struct dl_block { -+ u32 type; -+ u32 offset; -+ } *blk; -+ -+ struct dl_image { -+ u32 magic; -+ u32 id; -+ u32 size; -+ union { -+ u32 data[0]; -+ struct dl_block blocks[0]; -+ }; -+ } *image; -+ -+ struct dl_codeblock { -+ u32 npe_addr; -+ u32 size; -+ u32 data[0]; -+ } *cb; -+ -+ int i, j, err, data_size, instr_size, blocks, table_end; -+ u32 cmd; -+ -+ if ((err = request_firmware(&fw_entry, name, dev)) != 0) -+ return err; -+ -+ err = -EINVAL; -+ if (fw_entry->size < sizeof(struct dl_image)) { -+ print_npe(KERN_ERR, npe, "incomplete firmware file\n"); -+ goto err; -+ } -+ image = (struct dl_image*)fw_entry->data; -+ -+#if DEBUG_FW -+ print_npe(KERN_DEBUG, npe, "firmware: %08X %08X %08X (0x%X bytes)\n", -+ image->magic, image->id, image->size, image->size * 4); -+#endif -+ -+ if (image->magic == swab32(FW_MAGIC)) { /* swapped file */ -+ image->id = swab32(image->id); -+ image->size = swab32(image->size); -+ } else if (image->magic != FW_MAGIC) { -+ print_npe(KERN_ERR, npe, "bad firmware file magic: 0x%X\n", -+ image->magic); -+ goto err; -+ } -+ if ((image->size * 4 + sizeof(struct dl_image)) != fw_entry->size) { -+ print_npe(KERN_ERR, npe, -+ "inconsistent size of firmware file\n"); -+ goto err; -+ } -+ if (((image->id >> 24) & 0xF /* NPE ID */) != npe->id) { -+ print_npe(KERN_ERR, npe, "firmware file NPE ID mismatch\n"); -+ goto err; -+ } -+ if (image->magic == swab32(FW_MAGIC)) -+ for (i = 0; i < image->size; i++) -+ image->data[i] = swab32(image->data[i]); -+ -+ if (!cpu_is_ixp46x() && ((image->id >> 28) & 0xF /* device ID */)) { -+ print_npe(KERN_INFO, npe, "IXP46x firmware ignored on " -+ "IXP42x\n"); -+ goto err; -+ } -+ -+ if (npe_running(npe)) { -+ print_npe(KERN_INFO, npe, "unable to load firmware, NPE is " -+ "already running\n"); -+ err = -EBUSY; -+ goto err; -+ } -+#if 0 -+ npe_stop(npe); -+ npe_reset(npe); -+#endif -+ -+ print_npe(KERN_INFO, npe, "firmware functionality 0x%X, " -+ "revision 0x%X:%X\n", (image->id >> 16) & 0xFF, -+ (image->id >> 8) & 0xFF, image->id & 0xFF); -+ -+ if (!cpu_is_ixp46x()) { -+ if (!npe->id) -+ instr_size = NPE_A_42X_INSTR_SIZE; -+ else -+ instr_size = NPE_B_AND_C_42X_INSTR_SIZE; -+ data_size = NPE_42X_DATA_SIZE; -+ } else { -+ instr_size = NPE_46X_INSTR_SIZE; -+ data_size = NPE_46X_DATA_SIZE; -+ } -+ -+ for (blocks = 0; blocks * sizeof(struct dl_block) / 4 < image->size; -+ blocks++) -+ if (image->blocks[blocks].type == FW_BLOCK_TYPE_EOF) -+ break; -+ if (blocks * sizeof(struct dl_block) / 4 >= image->size) { -+ print_npe(KERN_INFO, npe, "firmware EOF block marker not " -+ "found\n"); -+ goto err; -+ } -+ -+#if DEBUG_FW -+ print_npe(KERN_DEBUG, npe, "%i firmware blocks found\n", blocks); -+#endif -+ -+ table_end = blocks * sizeof(struct dl_block) / 4 + 1 /* EOF marker */; -+ for (i = 0, blk = image->blocks; i < blocks; i++, blk++) { -+ if (blk->offset > image->size - sizeof(struct dl_codeblock) / 4 -+ || blk->offset < table_end) { -+ print_npe(KERN_INFO, npe, "invalid offset 0x%X of " -+ "firmware block #%i\n", blk->offset, i); -+ goto err; -+ } -+ -+ cb = (struct dl_codeblock*)&image->data[blk->offset]; -+ if (blk->type == FW_BLOCK_TYPE_INSTR) { -+ if (cb->npe_addr + cb->size > instr_size) -+ goto too_big; -+ cmd = CMD_WR_INS_MEM; -+ } else if (blk->type == FW_BLOCK_TYPE_DATA) { -+ if (cb->npe_addr + cb->size > data_size) -+ goto too_big; -+ cmd = CMD_WR_DATA_MEM; -+ } else { -+ print_npe(KERN_INFO, npe, "invalid firmware block #%i " -+ "type 0x%X\n", i, blk->type); -+ goto err; -+ } -+ if (blk->offset + sizeof(*cb) / 4 + cb->size > image->size) { -+ print_npe(KERN_INFO, npe, "firmware block #%i doesn't " -+ "fit in firmware image: type %c, start 0x%X," -+ " length 0x%X\n", i, -+ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D', -+ cb->npe_addr, cb->size); -+ goto err; -+ } -+ -+ for (j = 0; j < cb->size; j++) -+ npe_cmd_write(npe, cb->npe_addr + j, cmd, cb->data[j]); -+ } -+ -+ npe_start(npe); -+ if (!npe_running(npe)) -+ print_npe(KERN_ERR, npe, "unable to start\n"); -+ release_firmware(fw_entry); -+ return 0; -+ -+too_big: -+ print_npe(KERN_INFO, npe, "firmware block #%i doesn't fit in NPE " -+ "memory: type %c, start 0x%X, length 0x%X\n", i, -+ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D', -+ cb->npe_addr, cb->size); -+err: -+ release_firmware(fw_entry); -+ return err; -+} -+ -+ -+struct npe *npe_request(int id) -+{ -+ if (id < NPE_COUNT) -+ if (npe_tab[id].valid) -+ if (try_module_get(THIS_MODULE)) -+ return &npe_tab[id]; -+ return NULL; -+} -+ -+void npe_release(struct npe *npe) -+{ -+ module_put(THIS_MODULE); -+} -+ -+ -+static int __init npe_init_module(void) -+{ -+ -+ int i, found = 0; -+ -+ for (i = 0; i < NPE_COUNT; i++) { -+ struct npe *npe = &npe_tab[i]; -+ if (!(ixp4xx_read_feature_bits() & -+ (IXP4XX_FEATURE_RESET_NPEA << i))) -+ continue; /* NPE already disabled or not present */ -+ if (!(npe->mem_res = request_mem_region(npe->regs_phys, -+ REGS_SIZE, -+ npe_name(npe)))) { -+ print_npe(KERN_ERR, npe, -+ "failed to request memory region\n"); -+ continue; -+ } -+ -+ if (npe_reset(npe)) -+ continue; -+ npe->valid = 1; -+ found++; -+ } -+ -+ if (!found) -+ return -ENOSYS; -+ return 0; -+} -+ -+static void __exit npe_cleanup_module(void) -+{ -+ int i; -+ -+ for (i = 0; i < NPE_COUNT; i++) -+ if (npe_tab[i].mem_res) { -+ npe_reset(&npe_tab[i]); -+ release_resource(npe_tab[i].mem_res); -+ } -+} -+ -+module_init(npe_init_module); -+module_exit(npe_cleanup_module); -+ -+MODULE_AUTHOR("Krzysztof Halasa"); -+MODULE_LICENSE("GPL v2"); -+ -+EXPORT_SYMBOL(npe_names); -+EXPORT_SYMBOL(npe_running); -+EXPORT_SYMBOL(npe_request); -+EXPORT_SYMBOL(npe_release); -+EXPORT_SYMBOL(npe_load_firmware); -+EXPORT_SYMBOL(npe_send_message); -+EXPORT_SYMBOL(npe_recv_message); -+EXPORT_SYMBOL(npe_send_recv_message); -diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c -new file mode 100644 -index 0000000..e833013 ---- /dev/null -+++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c -@@ -0,0 +1,274 @@ -+/* -+ * Intel IXP4xx Queue Manager driver for Linux -+ * -+ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl> -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of version 2 of the GNU General Public License -+ * as published by the Free Software Foundation. -+ */ -+ -+#include <linux/ioport.h> -+#include <linux/interrupt.h> -+#include <linux/kernel.h> -+#include <linux/module.h> -+#include <asm/arch/qmgr.h> -+ -+#define DEBUG 0 -+ -+struct qmgr_regs __iomem *qmgr_regs; -+static struct resource *mem_res; -+static spinlock_t qmgr_lock; -+static u32 used_sram_bitmap[4]; /* 128 16-dword pages */ -+static void (*irq_handlers[HALF_QUEUES])(void *pdev); -+static void *irq_pdevs[HALF_QUEUES]; -+ -+void qmgr_set_irq(unsigned int queue, int src, -+ void (*handler)(void *pdev), void *pdev) -+{ -+ u32 __iomem *reg = &qmgr_regs->irqsrc[queue / 8]; /* 8 queues / u32 */ -+ int bit = (queue % 8) * 4; /* 3 bits + 1 reserved bit per queue */ -+ unsigned long flags; -+ -+ src &= 7; -+ spin_lock_irqsave(&qmgr_lock, flags); -+ __raw_writel((__raw_readl(reg) & ~(7 << bit)) | (src << bit), reg); -+ irq_handlers[queue] = handler; -+ irq_pdevs[queue] = pdev; -+ spin_unlock_irqrestore(&qmgr_lock, flags); -+} -+ -+ -+static irqreturn_t qmgr_irq1(int irq, void *pdev) -+{ -+ int i; -+ u32 val = __raw_readl(&qmgr_regs->irqstat[0]); -+ __raw_writel(val, &qmgr_regs->irqstat[0]); /* ACK */ -+ -+ for (i = 0; i < HALF_QUEUES; i++) -+ if (val & (1 << i)) -+ irq_handlers[i](irq_pdevs[i]); -+ -+ return val ? IRQ_HANDLED : 0; -+} -+ -+ -+void qmgr_enable_irq(unsigned int queue) -+{ -+ unsigned long flags; -+ -+ spin_lock_irqsave(&qmgr_lock, flags); -+ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) | (1 << queue), -+ &qmgr_regs->irqen[0]); -+ spin_unlock_irqrestore(&qmgr_lock, flags); -+} -+ -+void qmgr_disable_irq(unsigned int queue) -+{ -+ unsigned long flags; -+ -+ spin_lock_irqsave(&qmgr_lock, flags); -+ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) & ~(1 << queue), -+ &qmgr_regs->irqen[0]); -+ spin_unlock_irqrestore(&qmgr_lock, flags); -+} -+ -+static inline void shift_mask(u32 *mask) -+{ -+ mask[3] = mask[3] << 1 | mask[2] >> 31; -+ mask[2] = mask[2] << 1 | mask[1] >> 31; -+ mask[1] = mask[1] << 1 | mask[0] >> 31; -+ mask[0] <<= 1; -+} -+ -+int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */, -+ unsigned int nearly_empty_watermark, -+ unsigned int nearly_full_watermark) -+{ -+ u32 cfg, addr = 0, mask[4]; /* in 16-dwords */ -+ int err; -+ -+ if (queue >= HALF_QUEUES) -+ return -ERANGE; -+ -+ if ((nearly_empty_watermark | nearly_full_watermark) & ~7) -+ return -EINVAL; -+ -+ switch (len) { -+ case 16: -+ cfg = 0 << 24; -+ mask[0] = 0x1; -+ break; -+ case 32: -+ cfg = 1 << 24; -+ mask[0] = 0x3; -+ break; -+ case 64: -+ cfg = 2 << 24; -+ mask[0] = 0xF; -+ break; -+ case 128: -+ cfg = 3 << 24; -+ mask[0] = 0xFF; -+ break; -+ default: -+ return -EINVAL; -+ } -+ -+ cfg |= nearly_empty_watermark << 26; -+ cfg |= nearly_full_watermark << 29; -+ len /= 16; /* in 16-dwords: 1, 2, 4 or 8 */ -+ mask[1] = mask[2] = mask[3] = 0; -+ -+ if (!try_module_get(THIS_MODULE)) -+ return -ENODEV; -+ -+ spin_lock_irq(&qmgr_lock); -+ if (__raw_readl(&qmgr_regs->sram[queue])) { -+ err = -EBUSY; -+ goto err; -+ } -+ -+ while (1) { -+ if (!(used_sram_bitmap[0] & mask[0]) && -+ !(used_sram_bitmap[1] & mask[1]) && -+ !(used_sram_bitmap[2] & mask[2]) && -+ !(used_sram_bitmap[3] & mask[3])) -+ break; /* found free space */ -+ -+ addr++; -+ shift_mask(mask); -+ if (addr + len > ARRAY_SIZE(qmgr_regs->sram)) { -+ printk(KERN_ERR "qmgr: no free SRAM space for" -+ " queue %i\n", queue); -+ err = -ENOMEM; -+ goto err; -+ } -+ } -+ -+ used_sram_bitmap[0] |= mask[0]; -+ used_sram_bitmap[1] |= mask[1]; -+ used_sram_bitmap[2] |= mask[2]; -+ used_sram_bitmap[3] |= mask[3]; -+ __raw_writel(cfg | (addr << 14), &qmgr_regs->sram[queue]); -+ spin_unlock_irq(&qmgr_lock); -+ -+#if DEBUG -+ printk(KERN_DEBUG "qmgr: requested queue %i, addr = 0x%02X\n", -+ queue, addr); -+#endif -+ return 0; -+ -+err: -+ spin_unlock_irq(&qmgr_lock); -+ module_put(THIS_MODULE); -+ return err; -+} -+ -+void qmgr_release_queue(unsigned int queue) -+{ -+ u32 cfg, addr, mask[4]; -+ -+ BUG_ON(queue >= HALF_QUEUES); /* not in valid range */ -+ -+ spin_lock_irq(&qmgr_lock); -+ cfg = __raw_readl(&qmgr_regs->sram[queue]); -+ addr = (cfg >> 14) & 0xFF; -+ -+ BUG_ON(!addr); /* not requested */ -+ -+ switch ((cfg >> 24) & 3) { -+ case 0: mask[0] = 0x1; break; -+ case 1: mask[0] = 0x3; break; -+ case 2: mask[0] = 0xF; break; -+ case 3: mask[0] = 0xFF; break; -+ } -+ -+ while (addr--) -+ shift_mask(mask); -+ -+ __raw_writel(0, &qmgr_regs->sram[queue]); -+ -+ used_sram_bitmap[0] &= ~mask[0]; -+ used_sram_bitmap[1] &= ~mask[1]; -+ used_sram_bitmap[2] &= ~mask[2]; -+ used_sram_bitmap[3] &= ~mask[3]; -+ irq_handlers[queue] = NULL; /* catch IRQ bugs */ -+ spin_unlock_irq(&qmgr_lock); -+ -+ module_put(THIS_MODULE); -+#if DEBUG -+ printk(KERN_DEBUG "qmgr: released queue %i\n", queue); -+#endif -+} -+ -+static int qmgr_init(void) -+{ -+ int i, err; -+ mem_res = request_mem_region(IXP4XX_QMGR_BASE_PHYS, -+ IXP4XX_QMGR_REGION_SIZE, -+ "IXP4xx Queue Manager"); -+ if (mem_res == NULL) -+ return -EBUSY; -+ -+ qmgr_regs = ioremap(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); -+ if (qmgr_regs == NULL) { -+ err = -ENOMEM; -+ goto error_map; -+ } -+ -+ /* reset qmgr registers */ -+ for (i = 0; i < 4; i++) { -+ __raw_writel(0x33333333, &qmgr_regs->stat1[i]); -+ __raw_writel(0, &qmgr_regs->irqsrc[i]); -+ } -+ for (i = 0; i < 2; i++) { -+ __raw_writel(0, &qmgr_regs->stat2[i]); -+ __raw_writel(0xFFFFFFFF, &qmgr_regs->irqstat[i]); /* clear */ -+ __raw_writel(0, &qmgr_regs->irqen[i]); -+ } -+ -+ for (i = 0; i < QUEUES; i++) -+ __raw_writel(0, &qmgr_regs->sram[i]); -+ -+ err = request_irq(IRQ_IXP4XX_QM1, qmgr_irq1, 0, -+ "IXP4xx Queue Manager", NULL); -+ if (err) { -+ printk(KERN_ERR "qmgr: failed to request IRQ%i\n", -+ IRQ_IXP4XX_QM1); -+ goto error_irq; -+ } -+ -+ used_sram_bitmap[0] = 0xF; /* 4 first pages reserved for config */ -+ spin_lock_init(&qmgr_lock); -+ -+ printk(KERN_INFO "IXP4xx Queue Manager initialized.\n"); -+ return 0; -+ -+error_irq: -+ iounmap(qmgr_regs); -+error_map: -+ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); -+ return err; -+} -+ -+static void qmgr_remove(void) -+{ -+ free_irq(IRQ_IXP4XX_QM1, NULL); -+ synchronize_irq(IRQ_IXP4XX_QM1); -+ iounmap(qmgr_regs); -+ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); -+} -+ -+module_init(qmgr_init); -+module_exit(qmgr_remove); -+ -+MODULE_LICENSE("GPL v2"); -+MODULE_AUTHOR("Krzysztof Halasa"); -+ -+EXPORT_SYMBOL(qmgr_regs); -+EXPORT_SYMBOL(qmgr_set_irq); -+EXPORT_SYMBOL(qmgr_enable_irq); -+EXPORT_SYMBOL(qmgr_disable_irq); -+EXPORT_SYMBOL(qmgr_request_queue); -+EXPORT_SYMBOL(qmgr_release_queue); diff --git a/drivers/net/arm/Kconfig b/drivers/net/arm/Kconfig index f9cc2b6..9274d3f 100644 --- a/drivers/net/arm/Kconfig @@ -1148,10 +27,10 @@ index a4c8682..7c812ac 100644 +obj-$(CONFIG_IXP4XX_ETH) += ixp4xx_eth.o diff --git a/drivers/net/arm/ixp4xx_eth.c b/drivers/net/arm/ixp4xx_eth.c new file mode 100644 -index 0000000..2c23f50 +index 0000000..98131a7 --- /dev/null +++ b/drivers/net/arm/ixp4xx_eth.c -@@ -0,0 +1,1259 @@ +@@ -0,0 +1,1261 @@ +/* + * Intel IXP4xx Ethernet driver for Linux + * @@ -1220,6 +99,8 @@ index 0000000..2c23f50 +#define RXFREE_QUEUE(port_id) (NPE_ID(port_id) + 26) +#define TXDONE_QUEUE 31 + ++#define ETH_NAPI_WEIGHT 16 ++ +/* TX Control Registers */ +#define TX_CNTRL0_TX_EN 0x01 +#define TX_CNTRL0_HALFDUPLEX 0x02 @@ -1315,6 +196,7 @@ index 0000000..2c23f50 + struct eth_regs __iomem *regs; + struct npe *npe; + struct net_device *netdev; ++ struct napi_struct napi; + struct net_device_stats stat; + struct mii_if_info mii; + struct delayed_work mdio_thread; @@ -1649,20 +531,21 @@ index 0000000..2c23f50 + printk(KERN_DEBUG "%s: eth_rx_irq\n", dev->name); +#endif + qmgr_disable_irq(port->plat->rxq); -+ netif_rx_schedule(dev); ++ netif_rx_schedule(dev, &port->napi); +} + -+static int eth_poll(struct net_device *dev, int *budget) ++static int eth_poll(struct napi_struct *napi, int budget) +{ -+ struct port *port = netdev_priv(dev); ++ struct port *port = container_of(napi, struct port, napi); ++ struct net_device *dev = port->netdev; + unsigned int rxq = port->plat->rxq, rxfreeq = RXFREE_QUEUE(port->id); -+ int quota = dev->quota, received = 0; ++ int received = 0; + +#if DEBUG_RX + printk(KERN_DEBUG "%s: eth_poll\n", dev->name); +#endif + -+ while (quota) { ++ while (received < budget) { + struct sk_buff *skb; + struct desc *desc; + int n; @@ -1672,17 +555,15 @@ index 0000000..2c23f50 +#endif + + if ((n = queue_get_desc(rxq, port, 0)) < 0) { -+ dev->quota -= received; /* No packet received */ -+ *budget -= received; -+ received = 0; ++ received = 0; /* No packet received */ +#if DEBUG_RX + printk(KERN_DEBUG "%s: eth_poll netif_rx_complete\n", + dev->name); +#endif -+ netif_rx_complete(dev); ++ netif_rx_complete(dev, &port->napi); + qmgr_enable_irq(rxq); + if (!qmgr_stat_empty(rxq) && -+ netif_rx_reschedule(dev, 0)) { ++ netif_rx_reschedule(dev, &port->napi)) { +#if DEBUG_RX + printk(KERN_DEBUG "%s: eth_poll" + " netif_rx_reschedule successed\n", @@ -1752,15 +633,13 @@ index 0000000..2c23f50 + desc->buf_len = MAX_MRU; + desc->pkt_len = 0; + queue_put_desc(rxfreeq, rx_desc_phys(port, n), desc); -+ quota--; + received++; + } -+ dev->quota -= received; -+ *budget -= received; ++ +#if DEBUG_RX + printk(KERN_DEBUG "eth_poll(): end, not all work done\n"); +#endif -+ return 1; /* not all work done */ ++ return received; /* not all work done */ +} + + @@ -2163,6 +1042,8 @@ index 0000000..2c23f50 + __raw_writel(0, &port->regs->rx_control[1]); + __raw_writel(DEFAULT_RX_CNTRL0, &port->regs->rx_control[0]); + ++ napi_enable(&port->napi); /* check location of this call */ ++ + phy_check_media(port, 1); + eth_set_mcast_list(dev); + netif_start_queue(dev); @@ -2176,7 +1057,7 @@ index 0000000..2c23f50 + qmgr_enable_irq(TXDONE_QUEUE); + } + ports_open++; -+ netif_rx_schedule(dev); /* we may already have RX data, enables IRQ */ ++ netif_rx_schedule(dev, &port->napi); /* we may already have RX data, enables IRQ */ + return 0; +} + @@ -2263,6 +1144,7 @@ index 0000000..2c23f50 + if (!ports_open) + qmgr_disable_irq(TXDONE_QUEUE); + cancel_rearming_delayed_work(&port->mdio_thread); ++ napi_disable(&port->napi); + destroy_queues(port); + release_queues(port); + return 0; @@ -2279,7 +1161,6 @@ index 0000000..2c23f50 + if (!(dev = alloc_etherdev(sizeof(struct port)))) + return -ENOMEM; + -+ SET_MODULE_OWNER(dev); + SET_NETDEV_DEV(dev, &pdev->dev); + port = netdev_priv(dev); + port->netdev = dev; @@ -2305,14 +1186,14 @@ index 0000000..2c23f50 + + dev->open = eth_open; + dev->hard_start_xmit = eth_xmit; -+ dev->poll = eth_poll; + dev->stop = eth_close; + dev->get_stats = eth_stats; + dev->do_ioctl = eth_ioctl; + dev->set_multicast_list = eth_set_mcast_list; -+ dev->weight = 16; + dev->tx_queue_len = 100; + ++ netif_napi_add(dev, &port->napi, eth_poll, ETH_NAPI_WEIGHT); ++ + if (!(port->npe = npe_request(NPE_ID(port->id)))) { + err = -EIO; + goto err_free; @@ -3719,51 +2600,22 @@ index 0000000..c4cdace +MODULE_LICENSE("GPL v2"); +module_init(hss_init_module); +module_exit(hss_cleanup_module); -diff --git a/include/asm-arm/arch-ixp4xx/cpu.h b/include/asm-arm/arch-ixp4xx/cpu.h -index d2523b3..2fa3d6b 100644 ---- a/include/asm-arm/arch-ixp4xx/cpu.h -+++ b/include/asm-arm/arch-ixp4xx/cpu.h -@@ -28,4 +28,19 @@ extern unsigned int processor_id; - #define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ - IXP465_PROCESSOR_ID_VALUE) - -+static inline u32 ixp4xx_read_feature_bits(void) -+{ -+ unsigned int val = ~*IXP4XX_EXP_CFG2; -+ val &= ~IXP4XX_FEATURE_RESERVED; -+ if (!cpu_is_ixp46x()) -+ val &= ~IXP4XX_FEATURE_IXP46X_ONLY; -+ -+ return val; -+} -+ -+static inline void ixp4xx_write_feature_bits(u32 value) -+{ -+ *IXP4XX_EXP_CFG2 = ~value; -+} -+ - #endif /* _ASM_ARCH_CPU_H */ -diff --git a/include/asm-arm/arch-ixp4xx/hardware.h b/include/asm-arm/arch-ixp4xx/hardware.h -index 297ceda..73e8dc3 100644 ---- a/include/asm-arm/arch-ixp4xx/hardware.h -+++ b/include/asm-arm/arch-ixp4xx/hardware.h -@@ -27,13 +27,13 @@ - - #define pcibios_assign_all_busses() 1 - -+/* Register locations and bits */ -+#include "ixp4xx-regs.h" -+ - #ifndef __ASSEMBLER__ - #include <asm/arch/cpu.h> - #endif - --/* Register locations and bits */ --#include "ixp4xx-regs.h" -- - /* Platform helper functions and definitions */ - #include "platform.h" - +From: Krzysztof Halasa <khc@pm.waw.pl> +Subject: Adds functions to read and write IXP4xx "feature" bits + +Adds functions to read and write IXP4xx "feature" (aka "fuse") +bits, containing information about available/enabled CPU features. + +The uncompress.h included by boot/compressed/misc.c resides in +a different space than rest of the kernel and thus can't use +asm/hardware.h (including asm/arch/cpu.h - which, in turn, may use +EXPORTed symbol "processor_id"). + +Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> +-- +PATCH FOLLOWS +KernelVersion: 2.6.23 + diff --git a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h index 5d949d7..c704fe8 100644 --- a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h @@ -3816,93 +2668,125 @@ index 5d949d7..c704fe8 100644 + IXP4XX_FEATURE_XSCALE_MAX_FREQ) + #endif -diff --git a/include/asm-arm/arch-ixp4xx/npe.h b/include/asm-arm/arch-ixp4xx/npe.h -new file mode 100644 -index 0000000..37d0511 ---- /dev/null -+++ b/include/asm-arm/arch-ixp4xx/npe.h -@@ -0,0 +1,39 @@ -+#ifndef __IXP4XX_NPE_H -+#define __IXP4XX_NPE_H -+ -+#include <linux/kernel.h> -+ -+extern const char *npe_names[]; -+ -+struct npe_regs { -+ u32 exec_addr, exec_data, exec_status_cmd, exec_count; -+ u32 action_points[4]; -+ u32 watchpoint_fifo, watch_count; -+ u32 profile_count; -+ u32 messaging_status, messaging_control; -+ u32 mailbox_status, /*messaging_*/ in_out_fifo; -+}; -+ -+struct npe { -+ struct resource *mem_res; -+ struct npe_regs __iomem *regs; -+ u32 regs_phys; -+ int id; -+ int valid; -+}; +diff --git a/include/asm-arm/arch-ixp4xx/cpu.h b/include/asm-arm/arch-ixp4xx/cpu.h +index d2523b3..2fa3d6b 100644 +--- a/include/asm-arm/arch-ixp4xx/cpu.h ++++ b/include/asm-arm/arch-ixp4xx/cpu.h +@@ -28,4 +28,19 @@ extern unsigned int processor_id; + #define cpu_is_ixp46x() ((processor_id & IXP4XX_PROCESSOR_ID_MASK) == \ + IXP465_PROCESSOR_ID_VALUE) + ++static inline u32 ixp4xx_read_feature_bits(void) ++{ ++ unsigned int val = ~*IXP4XX_EXP_CFG2; ++ val &= ~IXP4XX_FEATURE_RESERVED; ++ if (!cpu_is_ixp46x()) ++ val &= ~IXP4XX_FEATURE_IXP46X_ONLY; + ++ return val; ++} + -+static inline const char *npe_name(struct npe *npe) ++static inline void ixp4xx_write_feature_bits(u32 value) +{ -+ return npe_names[npe->id]; ++ *IXP4XX_EXP_CFG2 = ~value; +} + -+int npe_running(struct npe *npe); -+int npe_send_message(struct npe *npe, const void *msg, const char *what); -+int npe_recv_message(struct npe *npe, void *msg, const char *what); -+int npe_send_recv_message(struct npe *npe, void *msg, const char *what); -+int npe_load_firmware(struct npe *npe, const char *name, struct device *dev); -+struct npe *npe_request(int id); -+void npe_release(struct npe *npe); -+ -+#endif /* __IXP4XX_NPE_H */ -diff --git a/include/asm-arm/arch-ixp4xx/platform.h b/include/asm-arm/arch-ixp4xx/platform.h -index 2a44d3d..695b9c4 100644 ---- a/include/asm-arm/arch-ixp4xx/platform.h -+++ b/include/asm-arm/arch-ixp4xx/platform.h -@@ -77,8 +77,7 @@ extern unsigned long ixp4xx_exp_bus_size; + #endif /* _ASM_ARCH_CPU_H */ +diff --git a/include/asm-arm/arch-ixp4xx/hardware.h b/include/asm-arm/arch-ixp4xx/hardware.h +index 297ceda..73e8dc3 100644 +--- a/include/asm-arm/arch-ixp4xx/hardware.h ++++ b/include/asm-arm/arch-ixp4xx/hardware.h +@@ -27,13 +27,13 @@ - /* - * The IXP4xx chips do not have an I2C unit, so GPIO lines are just -- * used to -- * Used as platform_data to provide GPIO pin information to the ixp42x -+ * used as platform_data to provide GPIO pin information to the ixp42x - * I2C driver. - */ - struct ixp4xx_i2c_pins { -@@ -86,6 +85,27 @@ struct ixp4xx_i2c_pins { - unsigned long scl_pin; - }; + #define pcibios_assign_all_busses() 1 -+#define IXP4XX_ETH_NPEA 0x00 -+#define IXP4XX_ETH_NPEB 0x10 -+#define IXP4XX_ETH_NPEC 0x20 ++/* Register locations and bits */ ++#include "ixp4xx-regs.h" + -+/* Information about built-in Ethernet MAC interfaces */ -+struct eth_plat_info { -+ u8 phy; /* MII PHY ID, 0 - 31 */ -+ u8 rxq; /* configurable, currently 0 - 31 only */ -+ u8 txreadyq; -+ u8 hwaddr[6]; -+}; + #ifndef __ASSEMBLER__ + #include <asm/arch/cpu.h> + #endif + +-/* Register locations and bits */ +-#include "ixp4xx-regs.h" +- + /* Platform helper functions and definitions */ + #include "platform.h" + +diff --git a/include/asm-arm/arch-ixp4xx/uncompress.h b/include/asm-arm/arch-ixp4xx/uncompress.h +index f7a35b7..34ef48f 100644 +--- a/include/asm-arm/arch-ixp4xx/uncompress.h ++++ b/include/asm-arm/arch-ixp4xx/uncompress.h +@@ -13,7 +13,7 @@ + #ifndef _ARCH_UNCOMPRESS_H_ + #define _ARCH_UNCOMPRESS_H_ + +-#include <asm/hardware.h> ++#include "ixp4xx-regs.h" + #include <asm/mach-types.h> + #include <linux/serial_reg.h> + +diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c +index 4de432e..c4c810b 100644 +--- a/arch/arm/kernel/setup.c ++++ b/arch/arm/kernel/setup.c +@@ -61,6 +61,7 @@ extern int root_mountflags; + extern void _stext, _text, _etext, __data_start, _edata, _end; + + unsigned int processor_id; ++EXPORT_SYMBOL(processor_id); + unsigned int __machine_arch_type; + EXPORT_SYMBOL(__machine_arch_type); + + + +From: Krzysztof Halasa <khc@pm.waw.pl> +Subject: Adds drivers for IXP4xx QMgr and NPE features + +This patch adds drivers for IXP4xx hardware Queue Manager and for +Network Processor Engines. Requires patch #4712 (reading/writing +CPU feature (aka fuse) bits). + +Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> +-- +PATCH FOLLOWS +KernelVersion: 2.6.23 + +diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig +index 61b2dfc..e774447 100644 +--- a/arch/arm/mach-ixp4xx/Kconfig ++++ b/arch/arm/mach-ixp4xx/Kconfig +@@ -189,6 +189,20 @@ config IXP4XX_INDIRECT_PCI + need to use the indirect method instead. If you don't know + what you need, leave this option unselected. + ++config IXP4XX_QMGR ++ tristate "IXP4xx Queue Manager support" ++ help ++ This driver supports IXP4xx built-in hardware queue manager ++ and is automatically selected by Ethernet and HSS drivers. + -+/* Information about built-in HSS (synchronous serial) interfaces */ -+struct hss_plat_info { -+ int (*set_clock)(int port, unsigned int clock_type); -+ int (*open)(int port, void *pdev, -+ void (*set_carrier_cb)(void *pdev, int carrier)); -+ void (*close)(int port, void *pdev); -+ u8 txreadyq; -+}; ++config IXP4XX_NPE ++ tristate "IXP4xx Network Processor Engine support" ++ select HOTPLUG ++ select FW_LOADER ++ help ++ This driver supports IXP4xx built-in network coprocessors ++ and is automatically selected by Ethernet and HSS drivers. + - /* - * This structure provide a means for the board setup code - * to give information to th pata_ixp4xx driver. It is + endmenu + + endif +diff --git a/arch/arm/mach-ixp4xx/Makefile b/arch/arm/mach-ixp4xx/Makefile +index 77e00ad..4bb97e1 100644 +--- a/arch/arm/mach-ixp4xx/Makefile ++++ b/arch/arm/mach-ixp4xx/Makefile +@@ -30,3 +30,5 @@ obj-$(CONFIG_MACH_GATEWAY7001) += gateway7001-setup.o + obj-$(CONFIG_MACH_WG302V2) += wg302v2-setup.o + + obj-$(CONFIG_PCI) += $(obj-pci-$(CONFIG_PCI)) common-pci.o ++obj-$(CONFIG_IXP4XX_QMGR) += ixp4xx_qmgr.o ++obj-$(CONFIG_IXP4XX_NPE) += ixp4xx_npe.o diff --git a/include/asm-arm/arch-ixp4xx/qmgr.h b/include/asm-arm/arch-ixp4xx/qmgr.h new file mode 100644 index 0000000..1e52b95 @@ -4035,16 +2919,1194 @@ index 0000000..1e52b95 +} + +#endif -diff --git a/include/asm-arm/arch-ixp4xx/uncompress.h b/include/asm-arm/arch-ixp4xx/uncompress.h -index f7a35b7..34ef48f 100644 ---- a/include/asm-arm/arch-ixp4xx/uncompress.h -+++ b/include/asm-arm/arch-ixp4xx/uncompress.h -@@ -13,7 +13,7 @@ - #ifndef _ARCH_UNCOMPRESS_H_ - #define _ARCH_UNCOMPRESS_H_ +diff --git a/include/asm-arm/arch-ixp4xx/npe.h b/include/asm-arm/arch-ixp4xx/npe.h +new file mode 100644 +index 0000000..37d0511 +--- /dev/null ++++ b/include/asm-arm/arch-ixp4xx/npe.h +@@ -0,0 +1,39 @@ ++#ifndef __IXP4XX_NPE_H ++#define __IXP4XX_NPE_H ++ ++#include <linux/kernel.h> ++ ++extern const char *npe_names[]; ++ ++struct npe_regs { ++ u32 exec_addr, exec_data, exec_status_cmd, exec_count; ++ u32 action_points[4]; ++ u32 watchpoint_fifo, watch_count; ++ u32 profile_count; ++ u32 messaging_status, messaging_control; ++ u32 mailbox_status, /*messaging_*/ in_out_fifo; ++}; ++ ++struct npe { ++ struct resource *mem_res; ++ struct npe_regs __iomem *regs; ++ u32 regs_phys; ++ int id; ++ int valid; ++}; ++ ++ ++static inline const char *npe_name(struct npe *npe) ++{ ++ return npe_names[npe->id]; ++} ++ ++int npe_running(struct npe *npe); ++int npe_send_message(struct npe *npe, const void *msg, const char *what); ++int npe_recv_message(struct npe *npe, void *msg, const char *what); ++int npe_send_recv_message(struct npe *npe, void *msg, const char *what); ++int npe_load_firmware(struct npe *npe, const char *name, struct device *dev); ++struct npe *npe_request(int id); ++void npe_release(struct npe *npe); ++ ++#endif /* __IXP4XX_NPE_H */ +diff --git a/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c +new file mode 100644 +index 0000000..e833013 +--- /dev/null ++++ b/arch/arm/mach-ixp4xx/ixp4xx_qmgr.c +@@ -0,0 +1,274 @@ ++/* ++ * Intel IXP4xx Queue Manager driver for Linux ++ * ++ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl> ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of version 2 of the GNU General Public License ++ * as published by the Free Software Foundation. ++ */ ++ ++#include <linux/ioport.h> ++#include <linux/interrupt.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <asm/arch/qmgr.h> ++ ++#define DEBUG 0 ++ ++struct qmgr_regs __iomem *qmgr_regs; ++static struct resource *mem_res; ++static spinlock_t qmgr_lock; ++static u32 used_sram_bitmap[4]; /* 128 16-dword pages */ ++static void (*irq_handlers[HALF_QUEUES])(void *pdev); ++static void *irq_pdevs[HALF_QUEUES]; ++ ++void qmgr_set_irq(unsigned int queue, int src, ++ void (*handler)(void *pdev), void *pdev) ++{ ++ u32 __iomem *reg = &qmgr_regs->irqsrc[queue / 8]; /* 8 queues / u32 */ ++ int bit = (queue % 8) * 4; /* 3 bits + 1 reserved bit per queue */ ++ unsigned long flags; ++ ++ src &= 7; ++ spin_lock_irqsave(&qmgr_lock, flags); ++ __raw_writel((__raw_readl(reg) & ~(7 << bit)) | (src << bit), reg); ++ irq_handlers[queue] = handler; ++ irq_pdevs[queue] = pdev; ++ spin_unlock_irqrestore(&qmgr_lock, flags); ++} ++ ++ ++static irqreturn_t qmgr_irq1(int irq, void *pdev) ++{ ++ int i; ++ u32 val = __raw_readl(&qmgr_regs->irqstat[0]); ++ __raw_writel(val, &qmgr_regs->irqstat[0]); /* ACK */ ++ ++ for (i = 0; i < HALF_QUEUES; i++) ++ if (val & (1 << i)) ++ irq_handlers[i](irq_pdevs[i]); ++ ++ return val ? IRQ_HANDLED : 0; ++} ++ ++ ++void qmgr_enable_irq(unsigned int queue) ++{ ++ unsigned long flags; ++ ++ spin_lock_irqsave(&qmgr_lock, flags); ++ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) | (1 << queue), ++ &qmgr_regs->irqen[0]); ++ spin_unlock_irqrestore(&qmgr_lock, flags); ++} ++ ++void qmgr_disable_irq(unsigned int queue) ++{ ++ unsigned long flags; ++ ++ spin_lock_irqsave(&qmgr_lock, flags); ++ __raw_writel(__raw_readl(&qmgr_regs->irqen[0]) & ~(1 << queue), ++ &qmgr_regs->irqen[0]); ++ spin_unlock_irqrestore(&qmgr_lock, flags); ++} ++ ++static inline void shift_mask(u32 *mask) ++{ ++ mask[3] = mask[3] << 1 | mask[2] >> 31; ++ mask[2] = mask[2] << 1 | mask[1] >> 31; ++ mask[1] = mask[1] << 1 | mask[0] >> 31; ++ mask[0] <<= 1; ++} ++ ++int qmgr_request_queue(unsigned int queue, unsigned int len /* dwords */, ++ unsigned int nearly_empty_watermark, ++ unsigned int nearly_full_watermark) ++{ ++ u32 cfg, addr = 0, mask[4]; /* in 16-dwords */ ++ int err; ++ ++ if (queue >= HALF_QUEUES) ++ return -ERANGE; ++ ++ if ((nearly_empty_watermark | nearly_full_watermark) & ~7) ++ return -EINVAL; ++ ++ switch (len) { ++ case 16: ++ cfg = 0 << 24; ++ mask[0] = 0x1; ++ break; ++ case 32: ++ cfg = 1 << 24; ++ mask[0] = 0x3; ++ break; ++ case 64: ++ cfg = 2 << 24; ++ mask[0] = 0xF; ++ break; ++ case 128: ++ cfg = 3 << 24; ++ mask[0] = 0xFF; ++ break; ++ default: ++ return -EINVAL; ++ } ++ ++ cfg |= nearly_empty_watermark << 26; ++ cfg |= nearly_full_watermark << 29; ++ len /= 16; /* in 16-dwords: 1, 2, 4 or 8 */ ++ mask[1] = mask[2] = mask[3] = 0; ++ ++ if (!try_module_get(THIS_MODULE)) ++ return -ENODEV; ++ ++ spin_lock_irq(&qmgr_lock); ++ if (__raw_readl(&qmgr_regs->sram[queue])) { ++ err = -EBUSY; ++ goto err; ++ } ++ ++ while (1) { ++ if (!(used_sram_bitmap[0] & mask[0]) && ++ !(used_sram_bitmap[1] & mask[1]) && ++ !(used_sram_bitmap[2] & mask[2]) && ++ !(used_sram_bitmap[3] & mask[3])) ++ break; /* found free space */ ++ ++ addr++; ++ shift_mask(mask); ++ if (addr + len > ARRAY_SIZE(qmgr_regs->sram)) { ++ printk(KERN_ERR "qmgr: no free SRAM space for" ++ " queue %i\n", queue); ++ err = -ENOMEM; ++ goto err; ++ } ++ } ++ ++ used_sram_bitmap[0] |= mask[0]; ++ used_sram_bitmap[1] |= mask[1]; ++ used_sram_bitmap[2] |= mask[2]; ++ used_sram_bitmap[3] |= mask[3]; ++ __raw_writel(cfg | (addr << 14), &qmgr_regs->sram[queue]); ++ spin_unlock_irq(&qmgr_lock); ++ ++#if DEBUG ++ printk(KERN_DEBUG "qmgr: requested queue %i, addr = 0x%02X\n", ++ queue, addr); ++#endif ++ return 0; ++ ++err: ++ spin_unlock_irq(&qmgr_lock); ++ module_put(THIS_MODULE); ++ return err; ++} ++ ++void qmgr_release_queue(unsigned int queue) ++{ ++ u32 cfg, addr, mask[4]; ++ ++ BUG_ON(queue >= HALF_QUEUES); /* not in valid range */ ++ ++ spin_lock_irq(&qmgr_lock); ++ cfg = __raw_readl(&qmgr_regs->sram[queue]); ++ addr = (cfg >> 14) & 0xFF; ++ ++ BUG_ON(!addr); /* not requested */ ++ ++ switch ((cfg >> 24) & 3) { ++ case 0: mask[0] = 0x1; break; ++ case 1: mask[0] = 0x3; break; ++ case 2: mask[0] = 0xF; break; ++ case 3: mask[0] = 0xFF; break; ++ } ++ ++ while (addr--) ++ shift_mask(mask); ++ ++ __raw_writel(0, &qmgr_regs->sram[queue]); ++ ++ used_sram_bitmap[0] &= ~mask[0]; ++ used_sram_bitmap[1] &= ~mask[1]; ++ used_sram_bitmap[2] &= ~mask[2]; ++ used_sram_bitmap[3] &= ~mask[3]; ++ irq_handlers[queue] = NULL; /* catch IRQ bugs */ ++ spin_unlock_irq(&qmgr_lock); ++ ++ module_put(THIS_MODULE); ++#if DEBUG ++ printk(KERN_DEBUG "qmgr: released queue %i\n", queue); ++#endif ++} ++ ++static int qmgr_init(void) ++{ ++ int i, err; ++ mem_res = request_mem_region(IXP4XX_QMGR_BASE_PHYS, ++ IXP4XX_QMGR_REGION_SIZE, ++ "IXP4xx Queue Manager"); ++ if (mem_res == NULL) ++ return -EBUSY; ++ ++ qmgr_regs = ioremap(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); ++ if (qmgr_regs == NULL) { ++ err = -ENOMEM; ++ goto error_map; ++ } ++ ++ /* reset qmgr registers */ ++ for (i = 0; i < 4; i++) { ++ __raw_writel(0x33333333, &qmgr_regs->stat1[i]); ++ __raw_writel(0, &qmgr_regs->irqsrc[i]); ++ } ++ for (i = 0; i < 2; i++) { ++ __raw_writel(0, &qmgr_regs->stat2[i]); ++ __raw_writel(0xFFFFFFFF, &qmgr_regs->irqstat[i]); /* clear */ ++ __raw_writel(0, &qmgr_regs->irqen[i]); ++ } ++ ++ for (i = 0; i < QUEUES; i++) ++ __raw_writel(0, &qmgr_regs->sram[i]); ++ ++ err = request_irq(IRQ_IXP4XX_QM1, qmgr_irq1, 0, ++ "IXP4xx Queue Manager", NULL); ++ if (err) { ++ printk(KERN_ERR "qmgr: failed to request IRQ%i\n", ++ IRQ_IXP4XX_QM1); ++ goto error_irq; ++ } ++ ++ used_sram_bitmap[0] = 0xF; /* 4 first pages reserved for config */ ++ spin_lock_init(&qmgr_lock); ++ ++ printk(KERN_INFO "IXP4xx Queue Manager initialized.\n"); ++ return 0; ++ ++error_irq: ++ iounmap(qmgr_regs); ++error_map: ++ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); ++ return err; ++} ++ ++static void qmgr_remove(void) ++{ ++ free_irq(IRQ_IXP4XX_QM1, NULL); ++ synchronize_irq(IRQ_IXP4XX_QM1); ++ iounmap(qmgr_regs); ++ release_mem_region(IXP4XX_QMGR_BASE_PHYS, IXP4XX_QMGR_REGION_SIZE); ++} ++ ++module_init(qmgr_init); ++module_exit(qmgr_remove); ++ ++MODULE_LICENSE("GPL v2"); ++MODULE_AUTHOR("Krzysztof Halasa"); ++ ++EXPORT_SYMBOL(qmgr_regs); ++EXPORT_SYMBOL(qmgr_set_irq); ++EXPORT_SYMBOL(qmgr_enable_irq); ++EXPORT_SYMBOL(qmgr_disable_irq); ++EXPORT_SYMBOL(qmgr_request_queue); ++EXPORT_SYMBOL(qmgr_release_queue); +diff --git a/arch/arm/mach-ixp4xx/ixp4xx_npe.c b/arch/arm/mach-ixp4xx/ixp4xx_npe.c +new file mode 100644 +index 0000000..83c137e +--- /dev/null ++++ b/arch/arm/mach-ixp4xx/ixp4xx_npe.c +@@ -0,0 +1,741 @@ ++/* ++ * Intel IXP4xx Network Processor Engine driver for Linux ++ * ++ * Copyright (C) 2007 Krzysztof Halasa <khc@pm.waw.pl> ++ * ++ * This program is free software; you can redistribute it and/or modify it ++ * under the terms of version 2 of the GNU General Public License ++ * as published by the Free Software Foundation. ++ * ++ * The code is based on publicly available information: ++ * - Intel IXP4xx Developer's Manual and other e-papers ++ * - Intel IXP400 Access Library Software (BSD license) ++ * - previous works by Christian Hohnstaedt <chohnstaedt@innominate.com> ++ * Thanks, Christian. ++ */ ++ ++#include <linux/delay.h> ++#include <linux/dma-mapping.h> ++#include <linux/firmware.h> ++#include <linux/io.h> ++#include <linux/kernel.h> ++#include <linux/module.h> ++#include <linux/slab.h> ++#include <asm/arch/npe.h> ++ ++#define DEBUG_MSG 0 ++#define DEBUG_FW 0 ++ ++#define NPE_COUNT 3 ++#define MAX_RETRIES 1000 /* microseconds */ ++#define NPE_42X_DATA_SIZE 0x800 /* in dwords */ ++#define NPE_46X_DATA_SIZE 0x1000 ++#define NPE_A_42X_INSTR_SIZE 0x1000 ++#define NPE_B_AND_C_42X_INSTR_SIZE 0x800 ++#define NPE_46X_INSTR_SIZE 0x1000 ++#define REGS_SIZE 0x1000 ++ ++#define NPE_PHYS_REG 32 ++ ++#define FW_MAGIC 0xFEEDF00D ++#define FW_BLOCK_TYPE_INSTR 0x0 ++#define FW_BLOCK_TYPE_DATA 0x1 ++#define FW_BLOCK_TYPE_EOF 0xF ++ ++/* NPE exec status (read) and command (write) */ ++#define CMD_NPE_STEP 0x01 ++#define CMD_NPE_START 0x02 ++#define CMD_NPE_STOP 0x03 ++#define CMD_NPE_CLR_PIPE 0x04 ++#define CMD_CLR_PROFILE_CNT 0x0C ++#define CMD_RD_INS_MEM 0x10 /* instruction memory */ ++#define CMD_WR_INS_MEM 0x11 ++#define CMD_RD_DATA_MEM 0x12 /* data memory */ ++#define CMD_WR_DATA_MEM 0x13 ++#define CMD_RD_ECS_REG 0x14 /* exec access register */ ++#define CMD_WR_ECS_REG 0x15 ++ ++#define STAT_RUN 0x80000000 ++#define STAT_STOP 0x40000000 ++#define STAT_CLEAR 0x20000000 ++#define STAT_ECS_K 0x00800000 /* pipeline clean */ ++ ++#define NPE_STEVT 0x1B ++#define NPE_STARTPC 0x1C ++#define NPE_REGMAP 0x1E ++#define NPE_CINDEX 0x1F ++ ++#define INSTR_WR_REG_SHORT 0x0000C000 ++#define INSTR_WR_REG_BYTE 0x00004000 ++#define INSTR_RD_FIFO 0x0F888220 ++#define INSTR_RESET_MBOX 0x0FAC8210 ++ ++#define ECS_BG_CTXT_REG_0 0x00 /* Background Executing Context */ ++#define ECS_BG_CTXT_REG_1 0x01 /* Stack level */ ++#define ECS_BG_CTXT_REG_2 0x02 ++#define ECS_PRI_1_CTXT_REG_0 0x04 /* Priority 1 Executing Context */ ++#define ECS_PRI_1_CTXT_REG_1 0x05 /* Stack level */ ++#define ECS_PRI_1_CTXT_REG_2 0x06 ++#define ECS_PRI_2_CTXT_REG_0 0x08 /* Priority 2 Executing Context */ ++#define ECS_PRI_2_CTXT_REG_1 0x09 /* Stack level */ ++#define ECS_PRI_2_CTXT_REG_2 0x0A ++#define ECS_DBG_CTXT_REG_0 0x0C /* Debug Executing Context */ ++#define ECS_DBG_CTXT_REG_1 0x0D /* Stack level */ ++#define ECS_DBG_CTXT_REG_2 0x0E ++#define ECS_INSTRUCT_REG 0x11 /* NPE Instruction Register */ ++ ++#define ECS_REG_0_ACTIVE 0x80000000 /* all levels */ ++#define ECS_REG_0_NEXTPC_MASK 0x1FFF0000 /* BG/PRI1/PRI2 levels */ ++#define ECS_REG_0_LDUR_BITS 8 ++#define ECS_REG_0_LDUR_MASK 0x00000700 /* all levels */ ++#define ECS_REG_1_CCTXT_BITS 16 ++#define ECS_REG_1_CCTXT_MASK 0x000F0000 /* all levels */ ++#define ECS_REG_1_SELCTXT_BITS 0 ++#define ECS_REG_1_SELCTXT_MASK 0x0000000F /* all levels */ ++#define ECS_DBG_REG_2_IF 0x00100000 /* debug level */ ++#define ECS_DBG_REG_2_IE 0x00080000 /* debug level */ ++ ++/* NPE watchpoint_fifo register bit */ ++#define WFIFO_VALID 0x80000000 ++ ++/* NPE messaging_status register bit definitions */ ++#define MSGSTAT_OFNE 0x00010000 /* OutFifoNotEmpty */ ++#define MSGSTAT_IFNF 0x00020000 /* InFifoNotFull */ ++#define MSGSTAT_OFNF 0x00040000 /* OutFifoNotFull */ ++#define MSGSTAT_IFNE 0x00080000 /* InFifoNotEmpty */ ++#define MSGSTAT_MBINT 0x00100000 /* Mailbox interrupt */ ++#define MSGSTAT_IFINT 0x00200000 /* InFifo interrupt */ ++#define MSGSTAT_OFINT 0x00400000 /* OutFifo interrupt */ ++#define MSGSTAT_WFINT 0x00800000 /* WatchFifo interrupt */ ++ ++/* NPE messaging_control register bit definitions */ ++#define MSGCTL_OUT_FIFO 0x00010000 /* enable output FIFO */ ++#define MSGCTL_IN_FIFO 0x00020000 /* enable input FIFO */ ++#define MSGCTL_OUT_FIFO_WRITE 0x01000000 /* enable FIFO + WRITE */ ++#define MSGCTL_IN_FIFO_WRITE 0x02000000 ++ ++/* NPE mailbox_status value for reset */ ++#define RESET_MBOX_STAT 0x0000F0F0 ++ ++const char *npe_names[] = { "NPE-A", "NPE-B", "NPE-C" }; ++ ++#define print_npe(pri, npe, fmt, ...) \ ++ printk(pri "%s: " fmt, npe_name(npe), ## __VA_ARGS__) ++ ++#if DEBUG_MSG ++#define debug_msg(npe, fmt, ...) \ ++ print_npe(KERN_DEBUG, npe, fmt, ## __VA_ARGS__) ++#else ++#define debug_msg(npe, fmt, ...) ++#endif ++ ++static struct { ++ u32 reg, val; ++} ecs_reset[] = { ++ { ECS_BG_CTXT_REG_0, 0xA0000000 }, ++ { ECS_BG_CTXT_REG_1, 0x01000000 }, ++ { ECS_BG_CTXT_REG_2, 0x00008000 }, ++ { ECS_PRI_1_CTXT_REG_0, 0x20000080 }, ++ { ECS_PRI_1_CTXT_REG_1, 0x01000000 }, ++ { ECS_PRI_1_CTXT_REG_2, 0x00008000 }, ++ { ECS_PRI_2_CTXT_REG_0, 0x20000080 }, ++ { ECS_PRI_2_CTXT_REG_1, 0x01000000 }, ++ { ECS_PRI_2_CTXT_REG_2, 0x00008000 }, ++ { ECS_DBG_CTXT_REG_0, 0x20000000 }, ++ { ECS_DBG_CTXT_REG_1, 0x00000000 }, ++ { ECS_DBG_CTXT_REG_2, 0x001E0000 }, ++ { ECS_INSTRUCT_REG, 0x1003C00F }, ++}; ++ ++static struct npe npe_tab[NPE_COUNT] = { ++ { ++ .id = 0, ++ .regs = (struct npe_regs __iomem *)IXP4XX_NPEA_BASE_VIRT, ++ .regs_phys = IXP4XX_NPEA_BASE_PHYS, ++ }, { ++ .id = 1, ++ .regs = (struct npe_regs __iomem *)IXP4XX_NPEB_BASE_VIRT, ++ .regs_phys = IXP4XX_NPEB_BASE_PHYS, ++ }, { ++ .id = 2, ++ .regs = (struct npe_regs __iomem *)IXP4XX_NPEC_BASE_VIRT, ++ .regs_phys = IXP4XX_NPEC_BASE_PHYS, ++ } ++}; ++ ++int npe_running(struct npe *npe) ++{ ++ return (__raw_readl(&npe->regs->exec_status_cmd) & STAT_RUN) != 0; ++} ++ ++static void npe_cmd_write(struct npe *npe, u32 addr, int cmd, u32 data) ++{ ++ __raw_writel(data, &npe->regs->exec_data); ++ __raw_writel(addr, &npe->regs->exec_addr); ++ __raw_writel(cmd, &npe->regs->exec_status_cmd); ++} ++ ++static u32 npe_cmd_read(struct npe *npe, u32 addr, int cmd) ++{ ++ __raw_writel(addr, &npe->regs->exec_addr); ++ __raw_writel(cmd, &npe->regs->exec_status_cmd); ++ /* Iintroduce extra read cycles after issuing read command to NPE ++ so that we read the register after the NPE has updated it. ++ This is to overcome race condition between XScale and NPE */ ++ __raw_readl(&npe->regs->exec_data); ++ __raw_readl(&npe->regs->exec_data); ++ return __raw_readl(&npe->regs->exec_data); ++} ++ ++static void npe_clear_active(struct npe *npe, u32 reg) ++{ ++ u32 val = npe_cmd_read(npe, reg, CMD_RD_ECS_REG); ++ npe_cmd_write(npe, reg, CMD_WR_ECS_REG, val & ~ECS_REG_0_ACTIVE); ++} ++ ++static void npe_start(struct npe *npe) ++{ ++ /* ensure only Background Context Stack Level is active */ ++ npe_clear_active(npe, ECS_PRI_1_CTXT_REG_0); ++ npe_clear_active(npe, ECS_PRI_2_CTXT_REG_0); ++ npe_clear_active(npe, ECS_DBG_CTXT_REG_0); ++ ++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); ++ __raw_writel(CMD_NPE_START, &npe->regs->exec_status_cmd); ++} ++ ++static void npe_stop(struct npe *npe) ++{ ++ __raw_writel(CMD_NPE_STOP, &npe->regs->exec_status_cmd); ++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); /*FIXME?*/ ++} ++ ++static int __must_check npe_debug_instr(struct npe *npe, u32 instr, u32 ctx, ++ u32 ldur) ++{ ++ u32 wc; ++ int i; ++ ++ /* set the Active bit, and the LDUR, in the debug level */ ++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, ++ ECS_REG_0_ACTIVE | (ldur << ECS_REG_0_LDUR_BITS)); ++ ++ /* set CCTXT at ECS DEBUG L3 to specify in which context to execute ++ the instruction, and set SELCTXT at ECS DEBUG Level to specify ++ which context store to access. ++ Debug ECS Level Reg 1 has form 0x000n000n, where n = context number ++ */ ++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_1, CMD_WR_ECS_REG, ++ (ctx << ECS_REG_1_CCTXT_BITS) | ++ (ctx << ECS_REG_1_SELCTXT_BITS)); ++ ++ /* clear the pipeline */ ++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); ++ ++ /* load NPE instruction into the instruction register */ ++ npe_cmd_write(npe, ECS_INSTRUCT_REG, CMD_WR_ECS_REG, instr); ++ ++ /* we need this value later to wait for completion of NPE execution ++ step */ ++ wc = __raw_readl(&npe->regs->watch_count); ++ ++ /* issue a Step One command via the Execution Control register */ ++ __raw_writel(CMD_NPE_STEP, &npe->regs->exec_status_cmd); ++ ++ /* Watch Count register increments when NPE completes an instruction */ ++ for (i = 0; i < MAX_RETRIES; i++) { ++ if (wc != __raw_readl(&npe->regs->watch_count)) ++ return 0; ++ udelay(1); ++ } ++ ++ print_npe(KERN_ERR, npe, "reset: npe_debug_instr(): timeout\n"); ++ return -ETIMEDOUT; ++} ++ ++static int __must_check npe_logical_reg_write8(struct npe *npe, u32 addr, ++ u8 val, u32 ctx) ++{ ++ /* here we build the NPE assembler instruction: mov8 d0, #0 */ ++ u32 instr = INSTR_WR_REG_BYTE | /* OpCode */ ++ addr << 9 | /* base Operand */ ++ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */ ++ (val & ~0x1F) << (18 - 5);/* higher 3 bits to CoProc instr. */ ++ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */ ++} ++ ++static int __must_check npe_logical_reg_write16(struct npe *npe, u32 addr, ++ u16 val, u32 ctx) ++{ ++ /* here we build the NPE assembler instruction: mov16 d0, #0 */ ++ u32 instr = INSTR_WR_REG_SHORT | /* OpCode */ ++ addr << 9 | /* base Operand */ ++ (val & 0x1F) << 4 | /* lower 5 bits to immediate data */ ++ (val & ~0x1F) << (18 - 5);/* higher 11 bits to CoProc instr. */ ++ return npe_debug_instr(npe, instr, ctx, 1); /* execute it */ ++} ++ ++static int __must_check npe_logical_reg_write32(struct npe *npe, u32 addr, ++ u32 val, u32 ctx) ++{ ++ /* write in 16 bit steps first the high and then the low value */ ++ if (npe_logical_reg_write16(npe, addr, val >> 16, ctx)) ++ return -ETIMEDOUT; ++ return npe_logical_reg_write16(npe, addr + 2, val & 0xFFFF, ctx); ++} ++ ++static int npe_reset(struct npe *npe) ++{ ++ u32 val, ctl, exec_count, ctx_reg2; ++ int i; ++ ++ ctl = (__raw_readl(&npe->regs->messaging_control) | 0x3F000000) & ++ 0x3F3FFFFF; ++ ++ /* disable parity interrupt */ ++ __raw_writel(ctl & 0x3F00FFFF, &npe->regs->messaging_control); ++ ++ /* pre exec - debug instruction */ ++ /* turn off the halt bit by clearing Execution Count register. */ ++ exec_count = __raw_readl(&npe->regs->exec_count); ++ __raw_writel(0, &npe->regs->exec_count); ++ /* ensure that IF and IE are on (temporarily), so that we don't end up ++ stepping forever */ ++ ctx_reg2 = npe_cmd_read(npe, ECS_DBG_CTXT_REG_2, CMD_RD_ECS_REG); ++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2 | ++ ECS_DBG_REG_2_IF | ECS_DBG_REG_2_IE); ++ ++ /* clear the FIFOs */ ++ while (__raw_readl(&npe->regs->watchpoint_fifo) & WFIFO_VALID) ++ ; ++ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) ++ /* read from the outFIFO until empty */ ++ print_npe(KERN_DEBUG, npe, "npe_reset: read FIFO = 0x%X\n", ++ __raw_readl(&npe->regs->in_out_fifo)); ++ ++ while (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) ++ /* step execution of the NPE intruction to read inFIFO using ++ the Debug Executing Context stack */ ++ if (npe_debug_instr(npe, INSTR_RD_FIFO, 0, 0)) ++ return -ETIMEDOUT; ++ ++ /* reset the mailbox reg from the XScale side */ ++ __raw_writel(RESET_MBOX_STAT, &npe->regs->mailbox_status); ++ /* from NPE side */ ++ if (npe_debug_instr(npe, INSTR_RESET_MBOX, 0, 0)) ++ return -ETIMEDOUT; ++ ++ /* Reset the physical registers in the NPE register file */ ++ for (val = 0; val < NPE_PHYS_REG; val++) { ++ if (npe_logical_reg_write16(npe, NPE_REGMAP, val >> 1, 0)) ++ return -ETIMEDOUT; ++ /* address is either 0 or 4 */ ++ if (npe_logical_reg_write32(npe, (val & 1) * 4, 0, 0)) ++ return -ETIMEDOUT; ++ } ++ ++ /* Reset the context store = each context's Context Store registers */ ++ ++ /* Context 0 has no STARTPC. Instead, this value is used to set NextPC ++ for Background ECS, to set where NPE starts executing code */ ++ val = npe_cmd_read(npe, ECS_BG_CTXT_REG_0, CMD_RD_ECS_REG); ++ val &= ~ECS_REG_0_NEXTPC_MASK; ++ val |= (0 /* NextPC */ << 16) & ECS_REG_0_NEXTPC_MASK; ++ npe_cmd_write(npe, ECS_BG_CTXT_REG_0, CMD_WR_ECS_REG, val); ++ ++ for (i = 0; i < 16; i++) { ++ if (i) { /* Context 0 has no STEVT nor STARTPC */ ++ /* STEVT = off, 0x80 */ ++ if (npe_logical_reg_write8(npe, NPE_STEVT, 0x80, i)) ++ return -ETIMEDOUT; ++ if (npe_logical_reg_write16(npe, NPE_STARTPC, 0, i)) ++ return -ETIMEDOUT; ++ } ++ /* REGMAP = d0->p0, d8->p2, d16->p4 */ ++ if (npe_logical_reg_write16(npe, NPE_REGMAP, 0x820, i)) ++ return -ETIMEDOUT; ++ if (npe_logical_reg_write8(npe, NPE_CINDEX, 0, i)) ++ return -ETIMEDOUT; ++ } ++ ++ /* post exec */ ++ /* clear active bit in debug level */ ++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_0, CMD_WR_ECS_REG, 0); ++ /* clear the pipeline */ ++ __raw_writel(CMD_NPE_CLR_PIPE, &npe->regs->exec_status_cmd); ++ /* restore previous values */ ++ __raw_writel(exec_count, &npe->regs->exec_count); ++ npe_cmd_write(npe, ECS_DBG_CTXT_REG_2, CMD_WR_ECS_REG, ctx_reg2); ++ ++ /* write reset values to Execution Context Stack registers */ ++ for (val = 0; val < ARRAY_SIZE(ecs_reset); val++) ++ npe_cmd_write(npe, ecs_reset[val].reg, CMD_WR_ECS_REG, ++ ecs_reset[val].val); ++ ++ /* clear the profile counter */ ++ __raw_writel(CMD_CLR_PROFILE_CNT, &npe->regs->exec_status_cmd); ++ ++ __raw_writel(0, &npe->regs->exec_count); ++ __raw_writel(0, &npe->regs->action_points[0]); ++ __raw_writel(0, &npe->regs->action_points[1]); ++ __raw_writel(0, &npe->regs->action_points[2]); ++ __raw_writel(0, &npe->regs->action_points[3]); ++ __raw_writel(0, &npe->regs->watch_count); ++ ++ val = ixp4xx_read_feature_bits(); ++ /* reset the NPE */ ++ ixp4xx_write_feature_bits(val & ++ ~(IXP4XX_FEATURE_RESET_NPEA << npe->id)); ++ for (i = 0; i < MAX_RETRIES; i++) { ++ if (!(ixp4xx_read_feature_bits() & ++ (IXP4XX_FEATURE_RESET_NPEA << npe->id))) ++ break; /* reset completed */ ++ udelay(1); ++ } ++ if (i == MAX_RETRIES) ++ return -ETIMEDOUT; ++ ++ /* deassert reset */ ++ ixp4xx_write_feature_bits(val | ++ (IXP4XX_FEATURE_RESET_NPEA << npe->id)); ++ for (i = 0; i < MAX_RETRIES; i++) { ++ if (ixp4xx_read_feature_bits() & ++ (IXP4XX_FEATURE_RESET_NPEA << npe->id)) ++ break; /* NPE is back alive */ ++ udelay(1); ++ } ++ if (i == MAX_RETRIES) ++ return -ETIMEDOUT; ++ ++ npe_stop(npe); ++ ++ /* restore NPE configuration bus Control Register - parity settings */ ++ __raw_writel(ctl, &npe->regs->messaging_control); ++ return 0; ++} ++ ++ ++int npe_send_message(struct npe *npe, const void *msg, const char *what) ++{ ++ const u32 *send = msg; ++ int cycles = 0; ++ ++ debug_msg(npe, "Trying to send message %s [%08X:%08X]\n", ++ what, send[0], send[1]); ++ ++ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE) { ++ debug_msg(npe, "NPE input FIFO not empty\n"); ++ return -EIO; ++ } ++ ++ __raw_writel(send[0], &npe->regs->in_out_fifo); ++ ++ if (!(__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNF)) { ++ debug_msg(npe, "NPE input FIFO full\n"); ++ return -EIO; ++ } ++ ++ __raw_writel(send[1], &npe->regs->in_out_fifo); ++ ++ while ((cycles < MAX_RETRIES) && ++ (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_IFNE)) { ++ udelay(1); ++ cycles++; ++ } ++ ++ if (cycles == MAX_RETRIES) { ++ debug_msg(npe, "Timeout sending message\n"); ++ return -ETIMEDOUT; ++ } ++ ++ debug_msg(npe, "Sending a message took %i cycles\n", cycles); ++ return 0; ++} ++ ++int npe_recv_message(struct npe *npe, void *msg, const char *what) ++{ ++ u32 *recv = msg; ++ int cycles = 0, cnt = 0; ++ ++ debug_msg(npe, "Trying to receive message %s\n", what); ++ ++ while (cycles < MAX_RETRIES) { ++ if (__raw_readl(&npe->regs->messaging_status) & MSGSTAT_OFNE) { ++ recv[cnt++] = __raw_readl(&npe->regs->in_out_fifo); ++ if (cnt == 2) ++ break; ++ } else { ++ udelay(1); ++ cycles++; ++ } ++ } ++ ++ switch(cnt) { ++ case 1: ++ debug_msg(npe, "Received [%08X]\n", recv[0]); ++ break; ++ case 2: ++ debug_msg(npe, "Received [%08X:%08X]\n", recv[0], recv[1]); ++ break; ++ } ++ ++ if (cycles == MAX_RETRIES) { ++ debug_msg(npe, "Timeout waiting for message\n"); ++ return -ETIMEDOUT; ++ } ++ ++ debug_msg(npe, "Receiving a message took %i cycles\n", cycles); ++ return 0; ++} ++ ++int npe_send_recv_message(struct npe *npe, void *msg, const char *what) ++{ ++ int result; ++ u32 *send = msg, recv[2]; ++ ++ if ((result = npe_send_message(npe, msg, what)) != 0) ++ return result; ++ if ((result = npe_recv_message(npe, recv, what)) != 0) ++ return result; ++ ++ if ((recv[0] != send[0]) || (recv[1] != send[1])) { ++ debug_msg(npe, "Message %s: unexpected message received\n", ++ what); ++ return -EIO; ++ } ++ return 0; ++} ++ ++ ++int npe_load_firmware(struct npe *npe, const char *name, struct device *dev) ++{ ++ const struct firmware *fw_entry; ++ ++ struct dl_block { ++ u32 type; ++ u32 offset; ++ } *blk; ++ ++ struct dl_image { ++ u32 magic; ++ u32 id; ++ u32 size; ++ union { ++ u32 data[0]; ++ struct dl_block blocks[0]; ++ }; ++ } *image; ++ ++ struct dl_codeblock { ++ u32 npe_addr; ++ u32 size; ++ u32 data[0]; ++ } *cb; ++ ++ int i, j, err, data_size, instr_size, blocks, table_end; ++ u32 cmd; ++ ++ if ((err = request_firmware(&fw_entry, name, dev)) != 0) ++ return err; ++ ++ err = -EINVAL; ++ if (fw_entry->size < sizeof(struct dl_image)) { ++ print_npe(KERN_ERR, npe, "incomplete firmware file\n"); ++ goto err; ++ } ++ image = (struct dl_image*)fw_entry->data; ++ ++#if DEBUG_FW ++ print_npe(KERN_DEBUG, npe, "firmware: %08X %08X %08X (0x%X bytes)\n", ++ image->magic, image->id, image->size, image->size * 4); ++#endif ++ ++ if (image->magic == swab32(FW_MAGIC)) { /* swapped file */ ++ image->id = swab32(image->id); ++ image->size = swab32(image->size); ++ } else if (image->magic != FW_MAGIC) { ++ print_npe(KERN_ERR, npe, "bad firmware file magic: 0x%X\n", ++ image->magic); ++ goto err; ++ } ++ if ((image->size * 4 + sizeof(struct dl_image)) != fw_entry->size) { ++ print_npe(KERN_ERR, npe, ++ "inconsistent size of firmware file\n"); ++ goto err; ++ } ++ if (((image->id >> 24) & 0xF /* NPE ID */) != npe->id) { ++ print_npe(KERN_ERR, npe, "firmware file NPE ID mismatch\n"); ++ goto err; ++ } ++ if (image->magic == swab32(FW_MAGIC)) ++ for (i = 0; i < image->size; i++) ++ image->data[i] = swab32(image->data[i]); ++ ++ if (!cpu_is_ixp46x() && ((image->id >> 28) & 0xF /* device ID */)) { ++ print_npe(KERN_INFO, npe, "IXP46x firmware ignored on " ++ "IXP42x\n"); ++ goto err; ++ } ++ ++ if (npe_running(npe)) { ++ print_npe(KERN_INFO, npe, "unable to load firmware, NPE is " ++ "already running\n"); ++ err = -EBUSY; ++ goto err; ++ } ++#if 0 ++ npe_stop(npe); ++ npe_reset(npe); ++#endif ++ ++ print_npe(KERN_INFO, npe, "firmware functionality 0x%X, " ++ "revision 0x%X:%X\n", (image->id >> 16) & 0xFF, ++ (image->id >> 8) & 0xFF, image->id & 0xFF); ++ ++ if (!cpu_is_ixp46x()) { ++ if (!npe->id) ++ instr_size = NPE_A_42X_INSTR_SIZE; ++ else ++ instr_size = NPE_B_AND_C_42X_INSTR_SIZE; ++ data_size = NPE_42X_DATA_SIZE; ++ } else { ++ instr_size = NPE_46X_INSTR_SIZE; ++ data_size = NPE_46X_DATA_SIZE; ++ } ++ ++ for (blocks = 0; blocks * sizeof(struct dl_block) / 4 < image->size; ++ blocks++) ++ if (image->blocks[blocks].type == FW_BLOCK_TYPE_EOF) ++ break; ++ if (blocks * sizeof(struct dl_block) / 4 >= image->size) { ++ print_npe(KERN_INFO, npe, "firmware EOF block marker not " ++ "found\n"); ++ goto err; ++ } ++ ++#if DEBUG_FW ++ print_npe(KERN_DEBUG, npe, "%i firmware blocks found\n", blocks); ++#endif ++ ++ table_end = blocks * sizeof(struct dl_block) / 4 + 1 /* EOF marker */; ++ for (i = 0, blk = image->blocks; i < blocks; i++, blk++) { ++ if (blk->offset > image->size - sizeof(struct dl_codeblock) / 4 ++ || blk->offset < table_end) { ++ print_npe(KERN_INFO, npe, "invalid offset 0x%X of " ++ "firmware block #%i\n", blk->offset, i); ++ goto err; ++ } ++ ++ cb = (struct dl_codeblock*)&image->data[blk->offset]; ++ if (blk->type == FW_BLOCK_TYPE_INSTR) { ++ if (cb->npe_addr + cb->size > instr_size) ++ goto too_big; ++ cmd = CMD_WR_INS_MEM; ++ } else if (blk->type == FW_BLOCK_TYPE_DATA) { ++ if (cb->npe_addr + cb->size > data_size) ++ goto too_big; ++ cmd = CMD_WR_DATA_MEM; ++ } else { ++ print_npe(KERN_INFO, npe, "invalid firmware block #%i " ++ "type 0x%X\n", i, blk->type); ++ goto err; ++ } ++ if (blk->offset + sizeof(*cb) / 4 + cb->size > image->size) { ++ print_npe(KERN_INFO, npe, "firmware block #%i doesn't " ++ "fit in firmware image: type %c, start 0x%X," ++ " length 0x%X\n", i, ++ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D', ++ cb->npe_addr, cb->size); ++ goto err; ++ } ++ ++ for (j = 0; j < cb->size; j++) ++ npe_cmd_write(npe, cb->npe_addr + j, cmd, cb->data[j]); ++ } ++ ++ npe_start(npe); ++ if (!npe_running(npe)) ++ print_npe(KERN_ERR, npe, "unable to start\n"); ++ release_firmware(fw_entry); ++ return 0; ++ ++too_big: ++ print_npe(KERN_INFO, npe, "firmware block #%i doesn't fit in NPE " ++ "memory: type %c, start 0x%X, length 0x%X\n", i, ++ blk->type == FW_BLOCK_TYPE_INSTR ? 'I' : 'D', ++ cb->npe_addr, cb->size); ++err: ++ release_firmware(fw_entry); ++ return err; ++} ++ ++ ++struct npe *npe_request(int id) ++{ ++ if (id < NPE_COUNT) ++ if (npe_tab[id].valid) ++ if (try_module_get(THIS_MODULE)) ++ return &npe_tab[id]; ++ return NULL; ++} ++ ++void npe_release(struct npe *npe) ++{ ++ module_put(THIS_MODULE); ++} ++ ++ ++static int __init npe_init_module(void) ++{ ++ ++ int i, found = 0; ++ ++ for (i = 0; i < NPE_COUNT; i++) { ++ struct npe *npe = &npe_tab[i]; ++ if (!(ixp4xx_read_feature_bits() & ++ (IXP4XX_FEATURE_RESET_NPEA << i))) ++ continue; /* NPE already disabled or not present */ ++ if (!(npe->mem_res = request_mem_region(npe->regs_phys, ++ REGS_SIZE, ++ npe_name(npe)))) { ++ print_npe(KERN_ERR, npe, ++ "failed to request memory region\n"); ++ continue; ++ } ++ ++ if (npe_reset(npe)) ++ continue; ++ npe->valid = 1; ++ found++; ++ } ++ ++ if (!found) ++ return -ENOSYS; ++ return 0; ++} ++ ++static void __exit npe_cleanup_module(void) ++{ ++ int i; ++ ++ for (i = 0; i < NPE_COUNT; i++) ++ if (npe_tab[i].mem_res) { ++ npe_reset(&npe_tab[i]); ++ release_resource(npe_tab[i].mem_res); ++ } ++} ++ ++module_init(npe_init_module); ++module_exit(npe_cleanup_module); ++ ++MODULE_AUTHOR("Krzysztof Halasa"); ++MODULE_LICENSE("GPL v2"); ++ ++EXPORT_SYMBOL(npe_names); ++EXPORT_SYMBOL(npe_running); ++EXPORT_SYMBOL(npe_request); ++EXPORT_SYMBOL(npe_release); ++EXPORT_SYMBOL(npe_load_firmware); ++EXPORT_SYMBOL(npe_send_message); ++EXPORT_SYMBOL(npe_recv_message); ++EXPORT_SYMBOL(npe_send_recv_message); + + +From 35acb53f356e80efad803b9460986d9786dc9b96 Mon Sep 17 00:00:00 2001 +From: Krzysztof Halasa <khc@pm.waw.pl> +Date: Tue, 29 Jan 2008 10:25:57 +1030 +Subject: Headers for IXP4xx built-in Ethernet and WAN drivers (Patch #4714) + +Adds platform structs and #defines required by drivers for +IXP4xx built-in Ethernet and WAN (sync serial) ports. + +The actual drivers will reside in drivers/net/arm and +drivers/net/wan and will be submitted separately. + +Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> +Signed-off-by: Rod Whitby <rod@whitby.id.au> + +PATCH FOLLOWS +KernelVersion: 2.6.24-git5 + +diff --git a/include/asm-arm/arch-ixp4xx/platform.h b/include/asm-arm/arch-ixp4xx/platform.h +index 2ce28e3..a1f2b54 100644 +--- a/include/asm-arm/arch-ixp4xx/platform.h ++++ b/include/asm-arm/arch-ixp4xx/platform.h +@@ -91,6 +91,27 @@ struct ixp4xx_pata_data { --#include <asm/hardware.h> -+#include "ixp4xx-regs.h" - #include <asm/mach-types.h> - #include <linux/serial_reg.h> + struct sys_timer; + ++#define IXP4XX_ETH_NPEA 0x00 ++#define IXP4XX_ETH_NPEB 0x10 ++#define IXP4XX_ETH_NPEC 0x20 ++ ++/* Information about built-in Ethernet MAC interfaces */ ++struct eth_plat_info { ++ u8 phy; /* MII PHY ID, 0 - 31 */ ++ u8 rxq; /* configurable, currently 0 - 31 only */ ++ u8 txreadyq; ++ u8 hwaddr[6]; ++}; ++ ++/* Information about built-in HSS (synchronous serial) interfaces */ ++struct hss_plat_info { ++ int (*set_clock)(int port, unsigned int clock_type); ++ int (*open)(int port, void *pdev, ++ void (*set_carrier_cb)(void *pdev, int carrier)); ++ void (*close)(int port, void *pdev); ++ u8 txreadyq; ++}; ++ + /* + * Frequency of clock used for primary clocksource + */ +-- +1.5.2.5 + +From 5a5be39c6411f2d6d8cead614f3f71af9fa4b4b4 Mon Sep 17 00:00:00 2001 +From: Krzysztof Halasa <khc@pm.waw.pl> +Date: Fri, 1 Feb 2008 11:37:47 +1030 +Subject: Ethernet support for IXDP425 boards (Patch #4715) + +Adds IXDP425 platform support for two built-in 10/100 Ethernet ports. + +This patch will do nothing until the actual Ethernet driver is +also included. + +Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl> +-- +PATCH FOLLOWS +KernelVersion: 2.6.23 + +diff --git a/arch/arm/mach-ixp4xx/ixdp425-setup.c b/arch/arm/mach-ixp4xx/ixdp425-setup.c +index e89070d..44584af 100644 +--- a/arch/arm/mach-ixp4xx/ixdp425-setup.c ++++ b/arch/arm/mach-ixp4xx/ixdp425-setup.c +@@ -177,6 +177,31 @@ static struct platform_device ixdp425_uart = { + .resource = ixdp425_uart_resources + }; ++/* Built-in 10/100 Ethernet MAC interfaces */ ++static struct eth_plat_info ixdp425_plat_eth[] = { ++ { ++ .phy = 0, ++ .rxq = 3, ++ .txreadyq = 20, ++ }, { ++ .phy = 1, ++ .rxq = 4, ++ .txreadyq = 21, ++ } ++}; ++ ++static struct platform_device ixdp425_eth[] = { ++ { ++ .name = "ixp4xx_eth", ++ .id = IXP4XX_ETH_NPEB, ++ .dev.platform_data = ixdp425_plat_eth, ++ }, { ++ .name = "ixp4xx_eth", ++ .id = IXP4XX_ETH_NPEC, ++ .dev.platform_data = ixdp425_plat_eth + 1, ++ } ++}; ++ + static struct platform_device *ixdp425_devices[] __initdata = { + &ixdp425_i2c_gpio, + &ixdp425_flash, +@@ -184,7 +209,9 @@ static struct platform_device *ixdp425_devices[] __initdata = { + defined(CONFIG_MTD_NAND_PLATFORM_MODULE) + &ixdp425_flash_nand, + #endif +- &ixdp425_uart ++ &ixdp425_uart, ++ &ixdp425_eth[0], ++ &ixdp425_eth[1], + }; + + static void __init ixdp425_init(void) +-- +1.5.2.5 + |